Most jobs are not directly tied with you getting hurt in your spare time and that having an effect on your ability to work. You can break your arm and still be a used car salesman. There are tons of clauses in pro contracts with the NBA, MLB, NFL that say do this or that in the offseason, get hurt and kiss this amount of money goodbye. Jason Williams lost millions in NBA bucks when he crashed his motorcyle, since his contract said specifically he was not permitted to do that. Happens all the time, what the UFC is asking of Fedor is not unique... They can't have this guy booked for a huge card, then get hurt in a Sambo tournament forcing him to pull out.