I totally understand how you feel. When my AH entered rehab @ first I was about out of my mind because he didn't sign a release form for them to speak with me. I later found out he did this on PURPOSE. It was so unfair because as you said - I had been the one taking care of him throughout addiction.
The only thing that I can say is that you need to hand his things over to him. Have his mail forwarded to where he is and let him deal with it. I can't think that he wouldn't get in touch with you at some point, but so far he's not. Hand his things back over to him and worry about yourself and working on you. If or when he does contact you, you'll BOTH be in a better place with recovery time under your belts. None of this is fair, but unfortunately that's what addiction does to the addicts themselves as well as those who love them.
Sorry you are here, but welcome! Lots of great people and great advice at SR.