But he has come to grips that he would rather have "peace at home" then constant fighting.
He thinks the only two choices are living a lie or fighting constantly? That's a cop out, he is still being affected by cult mind control. Arguing takes two people, if he refuses to argue, there will be no argument, it's entirely in his control. What he means is that he doesn't want to deal with the inevitable fall out of choosing to leave. That's his choice, but don't let him fool himself that he is helpless here.
If he chooses to leave it will be unpleasant, but there is little anyone can do about it if his mind is made up and he refuses to engage with anyone about it. I think he really just isn't ready to leave yet.