Husband ignores his family and blames me

My husband and I haven’t been great for the past few months. It’s just constant disagreements over little things but also big things like how he isn’t getting some of his mental health issues assessed by a doctor. So during this whole time…he has completely ignored his family who he is normally close with. Won’t respond to their texts and calls, refuses to go to a family get together over Labor Day – saying how it is all my fault he is distancing himself from his family and he refuses to be fake in front of them with me. I’m at a loss what to do – his nieces and nephews miss him so much and his brothers are so confused what is going on. Before this all started, he did have an episode in front of his brothers where he was physically aggressive. My husband apologized to them through email, but hasn’t spoken to them since. This incident did show everyone that he does need medical help. But he has also told me that this episode was my fault and refuses to see a doctor, only a marriage therapist. I have spoken to him about reaching out to family, how they miss him, etc. but he refuses. I almost want to ask him if he would go to his family get together over Labor Day without me, but I know he’d want to take our son and I just don’t trust my husband to pay attention to our son around an unfenced pool – it’s an area of anxiety for me. I’m at such a loss what to do and feel guilty for something that is out of my control. His parents are coming this weekend for an “intervention” and I am so worried he will just paint me as a villain to them or worse, be very aggressive to them. Anyone been in this situation before?? Thoughts?