In my opinion, what he does in his personal life is his business and it is between himself and his wife. I mean its not like he is a real teacher, he is just the coach of a sports team. Now unless he teaches other classes then that is different. Its his wife that should be dealing with him. The only reason he should lose his job is if she is underage, not consenting or if he is not doing his job as coach and meeting his job requirements. Just my 2 cents. I am also not the morality police because I am not a perfect person and cannot judge others.