Have a good time explaining why you resorted to violence in the courtroom instead of removing yourself and the victim from the situation. I would have just picked her up and carried her out the door. I cant stand drama so i would have just left and nipped that shyt in the bud. Either the situation warrants an ass whooping or leave the idiots to fight amongst themselves (in this case the latter)... period. Anything else is just enhancing the problem.
Hard to grab someone who is on the floor with two poor excuses for women hovering over them with body parts flying, right? I'd clear myself some space first. And I am damn confident I would not have any charges in the jurisdictions I frequent. You can resort to certain levels of violence to come to the defense of others.
But this is not worth arguing over. Again, YMMV and IANAL.