The Virginia law on Revenge Porn, from what I read, doesn't actually require you to intend to disseminate to a wider audience.
The points the court have to prove are basically threefold:
1) That you have not been given permission to release the video in question.
2) The video includes another person in a sexual position, or state of undress.
3) You have used the video in order to harass, coerce or intimidate someone (doesn't have to be the person in the video.)
Plus, I doubt that they will be so incompetent, the DA would only need to subpoena Instagram and Facebook to look at Ralph's messages. This is pretty standard and would be easy to justify as it would be to confirm the validity of the messages to Chris Kerr etc.
His only real defense is going to be arguing she consented to it, but Ralph being a fat retard had put out a different story: that he never released it. This is what Faith meant when she said he didn't release revenge porn, she was agreeing with Ralph. So a competent prosecution would ask why did Ralph deny releasing it when he allegedly had permission from Faith to release it anyway?
The answer is that he didn't have permission, he just convinced Faith it wasn't him that released it. The change in story confirms his guilt.