In the second period, the clip shows Domingue without a helmet as a scrum breaks out near his crease. According to the announcer, Domingue was run into on the play and immediately popped off his helmet and left the crease looking for the player that ran him, Garret Wilson. Domingue seems to skate up to Wilson, call him out, and Wilson obliged by making his way out of the crowd to scrap with Domingue.
Domingue pops a few right hands against Wilson, but the referees never allowed the two players to get at each other for a proper fight. Knowing there was a goalie involved and the game was beginning to devolve, the referees made the smart move to stop this fight before it had a chance to get started.