From the video, it seems the drunken Young offered them a beer before any shots were fired at deputies.
That was obviously the time for deescalating language and seeking to get people to chill. Nobody (thankfully) had been struck at that point. Heck, it was certainly not the time to yell at a drunk guy about combat and killing.
So did they forfeit their right to pull the deputies out of the line of fire because they were part of the altercation? Even if their actions contributed to the confrontation it doesn't change the fact that they pulled the downed deputies out of the line of fire. We're talking about two parts of the same incident.