
Quoting
Bubba Jimmy
I concur completely with the above. Just because you have no role in interacting with the company does not mean you have no role in helping your wife deal with the situation. That's just crazy. If my wife was about to lose her job for an illegal reason you bet I'd be finding the best employment / civil rights lawyer for her that I could.
While I wouldn't "condone" assaulting the guy, I don't think you've harmed your wife's position. That was between you and him. He would have to convince a court or administrative hearing officer that your wife's firing did not have anything to do with the ending of the affair he was having with her. He's in a tough spot on that one regardless of what you've done.