I've got to agree here. You know I understand exactly what it feels like to be in the situation you are in right now. Still in it too, by the way.
It has been extremely difficult for me to live through this part of the process--but I do have to admit that it definatly has helped my H get his head screwed back on straight. It sounds like a lot of the the same reasoning for moving out too. Don't panic, I've got to agree with Shinybear, you're getting a great deal of reassurance from your H and he sounds like he's being open and honest with you.
I hope he gets a good Counselor while going through this part.