Just a question. Do you want to let OM's W to know for her sake, or do you want to punish OM?

I ask, because in the process of punishing the OM, you may hurt his wife. She may very well know, may be dealing with it in her own way, she may be turning a blind eye to it, who knows. Or she may know nothing. But if your purpose is to hurt OM, please don't do it. If you truly want to do it just for the sake of OM's W, then I would think it through first on how you are going to act.

Sometimes when we want to hurt someone who hurts us, we hurt innocent people in the process.