Usually, that's a euphemism. But in Boston, true philosophical differences were the cause of the divorce between Celtics coach Jim O'Brien and the director of basketball operations, Danny Ainge.
O'Brien resigned Tues., after constant disagreement with Ainge over the direction of the club, and we want SportsNation's analysis.
Who should make the call when it comes to trades? How about playing time?
Is O'Brien honorable, disloyal, or crazy? We want your take, SportsNation.