TMG, I just thought I would throw this in as you and I have having similar experiences.
Now, I do in fact think my wife is nuts, no doubt about it. We will be getting divorced. There is no turning back.
BUT
There is some hope we can actually be friends. It can be done. You may be able to get over the initial shock and hurt, and if you were friends with your wife before, you might be again.
My wife and I chatted this afternoon and actually starting giving each other dating advice and both started cracking up. I could never live with her again, but as a not-too-close friend, it dulls some of the pain of the loss of what we once shared.