You know they actually do have this kind of stuff in their contract. I remember Dana training about it during the build up to one of Donald Cerrony fights. He said the can make them give up basically everything he wants to if they have a fight coming up.
I hope this is true. They should have some sort of leverage knowing their fighters aren't doing anything too crazy leading up to a fight. Funny it was involved with Cerroney who lives a very wild life. Motorcycles, the whole farm thing. Hell, he got even tagged by a horse to the jaw leading up to the Diaz fight.