Change the locks. If he wants his stuff, he needs to arrange for someone else to come pick it up (like his mother). Do not deal directly with him. This is one of those little brain tricks you play on yourself to maintain contact. Box his stuff up and put it in the garage...worse case...the doors to the house are locked and he can't get in but his garage door opener can still open the garage and give him access to his stuff out there.
The internet is 90% complaining and entitlement and I hate it because I deserve better!
