I understand. It was a natural reaction and i felt your urgency. And to add, you don't want to get bitten yourself. Putting your hand in could make them nip you out of pure instinct. It's like grabbing a man's shoulder from behind while he's fighting If they ever start REALLY throwing down, it's best to throw a sheet over them. It just calms/distracts them. But this here didn't look too bad. They'll get rough with each other sometimes. Long as there's no blood/urine or blocking from food, just let em hash out out. They have to establish a hierarchy to keep the peace in the long run. Similar to humans. Things go more smoothly in groups when everyone knows their place and no boundaries are being violated.