I loved the radio thing. Bob and his kind deserve an ass kicking. I wonder if Donny forwarded the radio show mp3 to Rose (Bob's wife).
You know, the thing with sitting the kids down would be just fine if you both are on a common front. If she does bring up bullshit to try an paint you as bad and her as a princess, I dont see any good coming from it. You will counter her bullshit and then she will counter you, blah blah blah - in front of the kids who then are left confused and probably in tears from more continued fighting by their parents. And even if you can get through it, there will be times she can speak her bullshit later in private to the kids.
I just dont see any good from you both trying to speak to the kids together about the divorce based upon previous history I have read about your evil witch slut. She hates you too much to be civil even for the kids benefit.
I think your son already knows who has taken the moral path just as mine does. It may take our daughters getting into their teens to realize the karma that has come upon by their mothers poor decisions. Or you and I may find a new lady in our lives who has a good influence on our daughters as to what an honest and respectful woman should be. I got my son and daughter involved in the scouts partly with that in mind - to learn and gain strength and honor.