Do you think he has some fear of leaving? Even though he is not happy there, it is what he is use to, or not use to, but wants to stay there as an alternative to really coming home yet. He may really want to leave but is scared. Does not like the restriction, but that it is better then being without it in his heart.
Even though it is a different home, it is the one he suffered the post tramatic reaction in. He will be ready, and he will say "lets go home."
I am keeping you all in my prayers every day Jacquie