Many of us in the family suspected that he 'changed sides'. I mean does anyone really change sexual orientation after traumatic experiences?
Planet, I don't think it is a direct result of that so-called "traumatic experience", but rather feeling more free to express himself as society is now becoming more and more tolerant of gays. We'll see a whole lot more people coming out and divorcing their spouses to enter in loving, monogamous R's with their same-sex partners.
Or maybe he isn't truly gay at all. Maybe just being himself and changing into the person he's always wanted to be. You know from reading the boards here the many of us have made changes to ourselves after BD and going through a divorce, right? Accept him for who he is regardless of outward appearances.