I'm going to try to make sure my ex doesn't do something stupid
Does he make a habit of doing stupid things?
My ex has published very explicit details of our sexual encounters which is breaking the confidentiality
I'm so sorry to hear that happened, I hope it's not too damaging to you. He should have never done something so betraying like that. Do you think you can confront him properly and try to get him to take all of this down?
I don't know, but I want to send him to hell.
Sending him to hell when you said you wanted to help him seems a little extreme. You should take legal action to keep your personal business out of the public eye and let your lawyer deal with things.