How much details should I give when I expose the A to WW´s friends and family. Since I have exposed, WW has moved out and stoped all contact with me. Is this normal? It took a week to expose to everybody, a bit to long I think.

I guess enough that they believe you. That ability of friends and family to minimize and rationalize sometimes parallels the WS's, in the absence of good enough evidence or admission by the WS. "Well, I'm sure they're just friends" and "She wouldn't do THAT" etc. Does she work with OM? If so, have you exposed the A at their workplace?

After exposing...
...switch back to a full blown Plan A.

Don't worry about the effect of exposing the A to tha family...
...in general doing this will not make you look too good to your WS... but that is water under the bridge.

Now work on Plan A.

Jim