muddyknees2000 said:

Its never said that once turned he'd serve the emperor. (thats the emperors plan....but who's to say what would happen) He's wild with anger...for all we know he could have slayed Vader, then turned on the emperor and taken all the power for himself. Its all possibilities at that point.

Ok, fine, you can argue that.....but even if that is the case it feels about as much like a switch getting flipped as Anakin's turn did to me. Obviously, of course, he did not turn....but i've never felt any tension in that scene to be honest.