Honey if he moved out change the locks. He has already indicated that he doesn't want to live there. I changed the locks the first time my ex just walked in before work one morning, I was still sleeping and I woke up to him standing over my bed. "I have the right to be here it's my house" That night there were new locks on every door.
The only thing he can really do is call the cops but if you are seperated then they can't really do anything. My ex tried that. If he comes to the house and won't leave then call the cops yourself and get a PFA against him.
As for the divorce decree, it will say what you agree to. Make sure you want all the debit. Once it is done it is done.