when he stops, you have to go near him otherwise he just waits for you and does nothing. As soon as he stops, get close to him, then jump far away, wait for his electric field to go down and then follow.
when you fight him later, if you can't figure out how to hurt him, hit him with a car (circle when near one) he'll turn back into himself without powers, then hit him with a claw attack.
Which is worse? Being hole-punched to death or being eaten alive by the cast of "Friends"?