Cam will have to stop using his head as a missile- that's the point of the rule. Safety. I understand this sounds like it could be a major hassle for the refs, but I don't see that it will be that bad. I think the main players affected are the DB's that fly into players head first, it's always been scary to watch. Many of the head first hits are cheap shots and unnecessary. I think this is a positive move for the NFL.