Hmmm, Does he actually acknowledge that OW is then also a problem? You wonder where they get their rationale for all this. In a way, I think that something is their brain simply stops working because what they are doing is so out of character that the brain itself doesn't understand what's going on so it creates an alternate reality to stop itself from going insane.
You've got it exactly right, Arsene. There's even a name for it -- "compartmentalization." It's a way for the wayward's brain to maintain its moral and intellectual equilibrium in the face of self-behavior that is antithetical to it.