Right now, if he is working his recovery, his focus must be on himself. Rehab teaches them how to live life on life's terms but the real test begins when he leaves. His life depends on him staying on a good path right now, his life depends on him focusing on his recovery.
It may seem unfair, but right now the last thing he needs to do is engage in a toxic interchange with you or anyone else. He may owe you a thousand apologies, and maybe one day you will get them. But you won't get them if he dies of addiction, and that's what is a steak right now.
What may help you work through the anger and emotional upset is to begin working your own recovery right now. Have you tried any meetings for yourself? Al-anon, Nar-anon or CoDA are three similar fellowships that can help you regain your balance and begin living your life in a healthier way also...regardless of whether he stays in his recovery or not.
Maybe give it a try, you have nothing to lose and everything to gain.
Hugs