This has nothing to do with domestic violence. The NFL, though it should do what it can to make sure its employees are not criminals, has absolutely no responsibility when it comes to crimes committed outside the game. They have been forced to, and I'm not complaining, implement ways to punish individuals for crimes committed in the real world beyond what the justice system, who IS responsible for those actions, seems necessary.
This is a violation of league rules. If they believe this occurred, it is cheating. Just because you personally believe that it was just a little cheating, that still means it's cheating. It was cheating in the conference championship game in order to earn a place in the ultimate title game in American sports.
Bountygate is a fair comparison (though it was less cheating and more terrible on the field conduct), and there were people suspended for a year, and more. That was also the controversy that led to Payton being guilty by ignorance, something that Belichick was mind-bogglyingly never accused of. He should have gotten what Payton gotten IF the NFL had done enough to prove this occurred. Brady should have gotten what Vilma got IF the NFL had done enough to prove he was involved.
The NFL didn't do enough to prove what was already obvious to everyone else, so the four games still bothers me. It would still bother me even if they had done enough to prove it, just for the opposite reason.