Well my brother runs a few tournaments a week and there is actually a penalty for "acting out" so to say. It costs you a game when you have acted poorly. If you lose because of it then that is that.
If you aren't in a match and you get in the middle of it or cause disruption with a tournament match, it will cost you a game in your next match.
Its not perfect but it keeps people in line a bit more. In some cases, outbursts could warrant a loss of match but that is rare.