I think you know the answer to your question, actually I KNOW you do.
Your sobriety needs to come FIRST- and he is mentally abusive and therefore he will bring you down and what happens when someone really chips away at our self esteem, confidence, and love for ourselves? We start to say "what is the point" and a lot of times, well most of the times, our sobriety goes right down the toilet.
I would go no contact, change my phone number, change my email and completely disconnect. If he continues to harass your friends then it might get to a point where friends and family will have to legally make him leave them alone. Contact on YOURSELF. You can not change him and you can not make him get sober. He is not a positive influence in your life at all and we need to surround ourselves with positive and healthy sober people not only in early sobriety but for the rest of our lives.