Can't say I've heard of that specific behaviour before, but nothing would surprise me. It's possible he feels too warm and becomes uncomfortable so maybe that triggers the biting. Does he move off the pad then?....if he did it may indicate he felt too warm. It does seem strange tho. Who knows what a cat's dreaming of when they twitch or make noises sleeping?
I think it's all normal behaviour.
Maybe an animal communicator could say what's happening, but don't know if we have any on this forum. Helloooo, anyone out there?
