Wow! Here is a good description of what happened.
Mark Krebs, Examiner.com --- The second period started out much the same way as the first ended. Sioux Falls came out hard but as a result picked up a couple of quick penalties which put them at a disadvantage. Then 7:16 into the period chaos broke out at center ice. Tempers flared after a high hit on Lordo and all 12 players on the ice broke into their own separate fights. All twelve players were sent to the penalty box while the referee and his linesmen tried to sort out all the different penalties. Eventually every player involved was given a game misconduct penalty and ejected for their part in the brawls.