Start enforcing moral turpitude? Where have you been? Professional athletes are suspended every year for various violations. Google "Aldon Smith" for a recent example. Michael Vick is another well-known example. For basketball, Ron Artest.
Aldon Smith and Michael Vick both broke the law, repeatedly. I don't know what you are talking about with Artest, but at least with the other two, it wasn't a judgement call by a ruling body about someones repugnant world view, privately expressed and based on evidence obtained secretly. Gambling, drugs, and other "vices" have been open to censure by the ruling bodies forever, yes. This would appear to open the door for them to go much, much further.