Hobgoblin realizes that preparing to fight Thor with or without the Mjolnir is suicide so he uses his thirty minutes to buy Thor a nice gift instead, like an action figure of Thor and some pie.
Since Thor doesn't have his Mjolnir, he can't fly and No Godblasts.
Hobgoblin has his glider, giving him the aerial advantage.
And with the prep time, he could gather enough resources to at least KO Thor.
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"Farewell, Damos... Ash, Pikachu... And you. All of my beloved." -- Arceus
With 30 minutes prep?? Whats he gonna do? Summon a highly powered armoured suit, Iron Man style?
With Thor's stength and durability he can take whatever Hobby throws at him. Thor could easily throw something large and heavy at Hobgoblin which, even if it misses, would distract him. This would enable Thor to leap at Hobby
Thor not only can take nukes with no damage, he can hang out in the middle of the sun for fun. COBALT bombs can't hurt thor. You think pumpkin bombs are going to do the trick?
And Thor doesn't HAVE to fly. He could obliterate/decapitate hobgoblin by throwing a brick at lightspeed. Hobgoblin is nowhere NEAR fast enough to dodge projectiles thrown by thor.
Oh, and there's that whole "calling down lightning" thing that would probably work, too.
Why is the 'creating a diversion and leaping at Hobby' most unlikely.? Thor is high class 100 strength, and like most people, the strongest part of his body is his legs. He may not have the leaping power of the Hulk, but I bet he could jump incredibly long distances. Classic Spiderman, who is class 10 strength, can jump between 3-5 stories, and attributes his leaping ability to his super strength. So it stands to reason that Thor, lacking Mjolner, will use this attack.
As I said before, Hobgoblin is toast-he is way out of his league
LOLZ, doesn't matter what goblin do, Thor won't get hurt by spiderman level villians. Sooner or later that flyer machine is gonna run out of gas* but you do have good senarios...