I don't think so, he has a pretty narsisictic personality so it's all about him usually. I have thought of talking to the OM wife as well, but she really had no control over this guy and he has always done what he wants. And the book says do not expose to others.
I've seen a lot of advice on here about exposing it to others. A LOT. And most says do it based on that the other person most definitely needs to know and it can also bring the whole thing to a screeching halt. Dang sure did the OM's wife called me that time.
Blow that f****ng ship out of the water.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.