If he has homeowner's insurance, a lawyer can look into submitting a claim for the nude pictures. I had a client whose ex sent photos to her work from his home computer, and I got the homeowners carrier to cough up 200k
It seems that if there is a restraining order in place, he may be in violation of it. I would bring that to the attention of the State Attorney's Office almost immediately. As far as a civil action is concerned, the standard for a defamation suit, in short, is that the written words are false, and that they have caused you some sort of damage. You will need to prove that there is damage to your reputation. The big issue here is that even if you win the lawsuit, does your ex have money to cough up for a judgment? Also, these types of suits are not cheap, and they generally do wear down on the plaintiff. You can bet that the defendant's attorney will try to drag your reputation through the mud in an attempt to show that there was no damage to your reputation.
The answer to this question is for informational purposes only and does not form an attorney-client relationship.
You need to speak with a local attorney who can help you remove the website and postings. Plus, the actions that you describe may be criminal and you may want to speak with the local Commonwealth's Attorney. Our firm represents victims of medical malpractice and nursing home neglect - not defamation - but I am a former Lynchburg prosecutor and would be able to refer you to someone who can help. Feel free to contact me at (540) 985-0098.