That is gang type behavior, pure and simple. He should be banned from AAU events FOR LIFE if that's true. I don't care who he is.
I've seen my fair share of idiot parents and coaches on the circuit, but only once did I see an altercation where a couple of coaches (and they were in fact husband and wife) ruined a perfectly good tournament setting and had to be escorted out by police. The wife was the "stats" person for the team, and a loud mouthed one at that. She was giving the refs the business the entire game and would not shut up. Total low class potty mouth. Well, the ref finally had enough and gave her a final warning. She didn't like that at all and stepped out on the court and got in his face. He T'd her up and tossed her. She sat down on the bench and refused to leave. When the ref told the coach (and husband) she had to leave the gym before the game would continue, he got in his face. Before you knew it they were both in his face and one of them bumped him. Now the players on that team were getting rowdy. The official EMT for the tournament was nearby and was smart enough to order the kids off the floor and out of the area so they didn't have to see this. Before the cops could get there the coach went ballistic, charged the scorers table (where just 30 seconds before some kids grandfather had been sitting doing clock), upended it and threw it backwards...into the backs of the people who were keeping score and clock for the game on the adjacent court! The table top score clock went smashing to the floor and luckily missed hitting anyone. This guy and his wife were maniacs. And then they started spewing racial BS saying the ref did it because they were black. It was amazing how long it took for parents of that team to corral the guy and get him to leave. They waited until after he went apeshit and hurt people, almost like 'dude, you better get outta here. They might arrest you'. The tournament director and refs called the game over. To this day I still don't know what happened, if charges were filed, etc. I do know that he was banned from ever attending tournaments sponsored by the bball club.
Probably the most disgusting display by a parent / coach that I have witnessed live. I felt awful for all the kids that had to see that, especially the players on his team. Great role model right there.