Flash doesn't appear to be blood lusted in the scan above because it contradicts what 'blood lusted,' even means, but I'll give you the benefit of the doubt. Anyways, this is counter-able.
The scan above shows that his speed is gone, but his mind is still completely functional. Therefore Thor can surround himself in lightning, and one shot of this would incapacitate Flash.
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Random/ThorLightning04AvengersClassic5.jpg
Or he can summon lightning from the sky while being completely immobilized:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Random/ThorLightning05v229.jpg
Thor can also expel lightning while being immobilized:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Random/ThorOmniblast01AvengersAnnual07.jpg
Not only that, but Thor can use his mind and willingly force Mjolnir to attack The Flash:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir22-Self-GuidanceAvengers.jpg
Not even Zues is powerful enough to stop it, in all likeliness, neither would Flash:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir100-SummoningAnnual08.jpg
Thor has also shown the capability to summon lightning and/or storms from his body, he doesn't need speed to do so:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir94-Storm279.jpg
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir97-Storm.jpg
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir150-StormsAvengers306.jpg
Even if Flash attempts to dodge his attacks by traversing through dimensions, Thor can summon lightning without Mjolnir, that will follow him through dimensions:
http://i388.photobucket.com/albums/oo326/OneDumbG0/Thor%20Mjolnir/ThorMjolnir153-LightningAnnual14.jpg
One The Flash realizes that stealing his speed won't be an option, Thor will have the opportunity to counter-attack. One solution to decimating Flash would be to cover the entire world in a storm, giving the Flash nowhere to hide:
http://static8.comicvine.com/uploads/scale_large/11130/111302504/5469333-4062234663-qDIam.jpg
Thor can use the Speed Force and redirect its energies back at him, and multiple such energy by as much as 10x:
http://static9.comicvine.com/uploads/scale_large/11130/111302504/5469334-2666594395-3ZxfD.jpg
Thor has the capability to cover the entire planet in lightning, giving Flash nowhere to run. This form of attack would probably one shot the flash. Additionally, Mjolnir gives Thor the ability to cut off Flash's access to the Speed Force and/or absorb any sort of energy and redirect it back towards the Flash. Without Flash's access to the speed force, he loses rather quickly. To support these analogies, I'll include some scans to prove that Thor will last long enough to pull off one of these attacks.
Durability:
Thor resists crushing gravitation forces "akin to that of a neutron star" This amount of force is superior to anything that the Flash can dish out. Because of this, the Flash doesn't have a way to put Thor down indefinitely, he's too durable.
http://static1.comicvine.com/uploads/scale_large/11130/111302504/5469335-7297286740-ThorD.jpg
Thor has resisted the "devastating energy of an exploding sun."
http://static2.comicvine.com/uploads/scale_large/11130/111302504/5469338-5632182578-ThorD.jpg
Thor survives being rocked by multiple blasts by the Fourth Host of Celestials, which are Universal level entities and are infinitely more powerful than Wally West. If these being are incapable of putting Thor down immediately, than Wally West would also be ineffective.
http://static3.comicvine.com/uploads/scale_large/11130/111302504/5469341-8169935216-ThorD.jpg
Counter to Mind Tampering:
Thor can resist any mind tampering that the Flash tries to do to him. Here he even resists the Mind Gem, which would be a more effective attack than anything that the Flash can dish out.
Counter to Phasing:
Thor survives Shadowcat's phasing ability which bonds him physically with the ground itself
Counter to speed stealing:
Thor can create swirling force fields that can negate Flash's access to the Speed Force. He managed to cut off Juggernauts influence from Cytorrak, something significantly more powerful than the Speed Force.
These force fields that Thor can create are so powerful that they can negate attacks that are strong enough to destroy one fifth of the Universe. Therefore, IMP attacks are hereby rendered useless.
Thor has counters to anything that the Flash can do and he has survived attacks that could one shot the Flash, attacks that are significantly more powerful than anything that the Flash can do. Therefore, Flash would be unable to damage him. Even so, if he tried, Thor can simply use Mjolnir and negate all of his attacks, and if the Flash comes anywhere near him, Thor can cut off his access to the Speed Force, and one shot him. If the Flash kept his distance and decided not to come close, Thor can cover the planet in lightning and one shot him.
Since Flash is blood lusted, he wouldn't try and steal Thor's speed. He would engage Thor in combat. But the problem is that The Flash is predictable, and Thor would catch on to this eventually and counter him:
Thor is more than durable enough to absorb anything that the Flash can dish out.
Tanking Celestial attacks
Tanking Destroy Amour attacks
Tanking Odin attacks
Tanking weight of half a planet
Tanking weight of a couple of planets
Tanking planet destruction
Sitting in sun
Tanking attacks from Surtur
These are all classic Thor feats, in no way whatsoever, can the Flash hit harder than the Destroyer, Odin, Surtur or a friggen Celestial.
Thor is capable of throwing his hammer and having it trail the flash. So as the Flash is busy pummeling away on Thor, whose no selling his attacks, Mjolnir would connect and one shot the Flash:
The Flash's body has been shown to be affected by temperatures or lightning:
If Thor decides to use Mjolnir to attack Wally West, or if he decides to summon lightning himself, he could target Wally and cripple him, making it impossible for him to run away. Furthermore, Thor's feats above, particularly the one where Thor covers the world in lightning, shows that this would be an effective tactic, since the Flash would have nowhere to run and would eventually become crippled.
Additionally, the Flash is affected by water, so Thor could channel some water and decide to drown him:
Mjolnir has such a wide array of abilities that Thor can use it to affect the ground below him, which would affect the Flash and give Thor the opportune moment that he needs to single shot him:
Wally West does not posses the strength to damage Thor, whom also has a wide array of abilities that he can use to incapacitate the Flash's body and/or his connection to the speed force. Because these two are blood lusted, it will likely become a physical battle, which means that Thor will no sell his attacks until he decides to unleash Mjolnir and/or use his weather abilities to cover the planet in lightning and/or affect the Flash, momentarily incapacitating him... but... that's all he needs.