I'm sorry for the stress his slip has created, Daisy. We are powerless, as you said.
He is still pretty much an active user, though, even though he is attempting sobriety. His brain has a lot of changing to do. So I'd just be very careful about believing everything he tells you. It isn't that he wants to hurt you. It's just that his disease is still strong right now.
I hope he continues his recovery work. I'm glad you are here on SR so everyone here can support you.
Breathe deep. Take good care of yourself. Trust your gut when it tries to catch your attention. Addicts are always ten steps ahead of us.