There are "legal rights" and there is the practical benefit of simply moving on. It all boils down to how much real estate this is going to take up in your head. I think you have a legal claim to a portion of the property in the apartment. But not every legal claim has to be enforced. That's why lawsuits are settled.
If it would give you more peace to move on, then move on and let him have "his" crap. OTOH, if walking away would eat you alive that you let him have it all, take what is fair and let him throw his tantrums. If he harasses you or your family, file a complaint for harassment. Let him take you to court over the stuff. There's no "right" or "wrong" solution here, just what's best for you.