I though I had seen it all

[Dribble]

Rule 10-4-9 states, "be charged with fighting" and doesn't specify if it's between opponents or teammates, but the penalty is a flagrant foul. Thus, it's an automatic ejection. I know rule 4-18 talks about the act being against an opponent, but if you were challenged on the rule, then you could just show 10-4-9 and be correct. As if the coaches would know where else to look in the rulebook!

I think this is an intuitive situation. A fight is a fight regardless of who is involved. It's clearly unsporting and needs to be dealt with by the OFFICIALS and not simply the coach.