I can't believe some people are blaming Ennis for this. Yes the guys a merkin but seriously he should not have to worry about a microphone picking up every single word he says in the middle of a match. There was nothing wrong with what he said, he was just questioning the referees decision, and of course there is going to be some F bombs dropped when the players get frustrated.
All he said was 'Are you f*cking kidding, what the f*ck kinda decision is that'. Now if he had directly called the referee a f*cking moron, then yes that is dissent and warrants a sin binning, but that wasn't the case at all.
Anybody who's ever played a sport knows there is foul language on display every game. If your going to blame anybody, blame the broadcasters who allowed the conversation to go to air.