I will say this-in general, when a team sees their coach lose control and his focus ON THE TASK AT HAND for a sustained block of time like this coach did, that's not good. That shows instability and limited skills as a team leader. Coaches demand that players "move on" from distractions in a game, whether it is a personal mistake made by the player, a mistake made by a teammate, a perception that a referee missed a call/made a bad call, etc....that coach has to be able to "turn the page" and coach his team. There is NOTHING that kid could have said that should have pulled that coach's single-minded focus away from the game for that length of time. Anything the kid said could/should have been dealt with after the game after the initial response. I'm not even commenting on the level of intensity/nature of the coach's behavior, I'm just commenting on the effectiveness of his coaching during that time. I see a coach who took his eye off the ball and couldn't handle the moment.