If two grown men want to fight, let them. So long as no one is incapacitated or getting kicked in the head, let them go. Getting tangled up in that shit is just making it more likely that someone's going to take an unprotected shot. Take a lesson from hockey referees.
Until that third (wo)man jumped in at 2:32, then all bets were off.
i guess its probably for the best, but the fact that real violence is always depressing, aesthetically unpleasant and not particularity satisfying is one of lifes many disappointments.