yeah, that worries me also. It was great when he came in as the X factor, but now that he's the starting QB, they should be handing it off for those up the middle yards. Moore can make some tough yards, but he can't throw the ball if TT goes down. If not they really need to recruit a bruising back next year so that Tebow can be a QB and rush just on an occasional Qb keeper play.
He is a tough guy, but someone is bound to hit his knee at a bad angle with as many barrelling running plays as he makes. Bones are bones.. its a big risk to have so many rushes up the middle for him, plus all the hits he takes when he drops back to pass.