Was it mentioned, earlier, that the Darth Plagueis book contradicted TCW? If so, that's incorrect. The book isn't Canon, it's Legends, right? That would mean it can't contradict TCW.
I guess the contributors in Wookieepedia have not consulted any sources, they pulled stuff from...
Do you understand the importance of citing evidence?
Force Harmony is a complex Force power which can be used offensively to sever or disrupt connection of an individual to the Force.
Here is an explanation from DE Sourcebook:
Leia and Luke Skywalker try to disrupt Palpatine's Force storm, which is destroying the Republic’s fleet. Palpatine is in the room with them. Luke and Leia and Leia ‘s new child are related by blood and are all strong with the Force. Leia spends a Force Point and links Luke and the child with the Light Side; her control roll is 47 and her sense roll is 36. She successfully uses the Force harmony power, giving everyone a +5D against the effects of any Dark Side powers. If both of these rolls exceed 75 Palpatine's highest skill roll when he summoned the Force storm, then Palpatine's control over the Force storm is severed.
You are so clueless about this matter and DE content in general, that this is not even funny.
You need to provide evidence that Luke and Leia used Wall of Light against Sidious, official sources are pointing out that they used Force Harmony technique.
Registered: Jul 2014
Location: Off learning Ground Realities
It's not assumption.
They severed him from the force. To sever someone from the force you encase them in a wall of light. The same article from Wookieepedia that you linked says that they flooded him with light side energy.
Wall of Light, Sever Force and Force Harmony are clearly all variants of the same power i.e. using pure light side energy to combat a dark sider. It seems that this can be used to disrupt dark side Force powers, empower light side Force Users and sever dark siders from the Force by enveloping them in the light side.
But Selenial is correct considering that Emperor Palpatine was engulfed in a wave of light side energy, because this is the textbook description of sever Force/wall of light. Obviously Force Harmony is just a different name to describe the same power in order to account for its other faculties.
Altogether this is a silly debate, Luke and Leia severed Sidious from the Force using the power of the light side. Period. End of discussion.
I was under the impression that sever force had nothing to do with one's Force alignment--The canonically LS Exile was going to be severed by the Councillors in TSL.
Registered: Jul 2014
Location: Off learning Ground Realities
No one's quite sure how that's possible, but it doesn't matter as we now Wall of Light is required to sever force energy.
It's possible that the Wound she had was inherently evil and Dark, and that encasing her in a Wall of Light would rid her of the wound and end her connection to the Force.
Yeh, no one's really sure how they planned on doing that, it's possible they considered her as Dark and it wouldnt have worked even if they weren't interrupted.