I wouldn't like to think so, i always liked to think that the force flows through everything and since the lightning is fueled by that, it could come from anywhere, but this could be why we never see Vadar use force lightning (not that he was ever in much of a position to do so).
__________________ "There is a time when the operation of the machine becomes so odious, makes you so sick at heart,
that you can't take part; you can't even passively take part, and you've got to
put your bodies upon the gears and upon the wheels, upon the levers, upon all the apparatus,
and you've got to make it stop. And you've got to indicate to the people who run it,
to the people who own it, that unless you're free, the machine will be prevented from working at all!" - Mario Savio
Registered: Dec 2003
Location: SECRET TUNNEL! SECRET TUNNEL!
attach the original then if you've still got it
and about no hands for Sidious, I'm fairly sure it doesn't matter, the force flows through all of him, maybe he'd shoot it out of his eyes or something
I'm sure he'd be able to shoot lightning without his hands. He could probably access this through any part of his body, just looks better coming out of the hands. lol