Harmy said:
Yeah, I always wondered about that, it's the same when Obi-Wan dies. This way it seems like he has to keep holding the button when it's on.
Imagine if it had stayed on when Obi-Wan died. His robes probably would've caught fire when the lit saber fell on them. :p One could almost make a version where it does that and when Vader pokes the robes with his foot, he's actually putting out the fire. Haha...oy.
Oh, um...ESB:R is cool.