It's a tough one,
I mean think about it, bleeding could all be a hologramtic illusion as well, our ability to push each other around can just be advanced collision detection...
the better games get, the more real life seems like a game...
Anyway...
so far as disprooving his theory, I think it's so crazy that it can't actually be disprooved...
lucky for you the emphasis of proof is on the person who makes the theory, not on the people aroung them to disproove it.