Dave,
I would not leave, unless you just can't deal with it mentally anymore. It kind of becomes a seige mentality, you are in it for the long haul regardless of the outcome.
There is something to be said for getting away from the WAW and your PMA at some point.
I find it interesting that your WAW has a coffee clutch of recently divorced women. That is exactly what my WAW developed for about a year pre-bomb, backed up by another circle of friends telling her it was ok to have an affair and to get a divorce.
Typical WAW behavior find any source that will justify and reinforce their position.
Prediction - she will be mad and think it is unfair that you have a group of "advisors", afterall she is the only one allowed to have them.