OP, I'm very disappointed to read your updates. As Lovely asks, has he explained why he does it? Why he feels entitled to do it? Why he does it even though you don't consent? How can you be certain he didn't share the images / videos and then delete the evidence?
I know you say I should not believe him but after 11 years of marriage I can truly say that I believe him.
This statement makes absolutely no sense to me. After 11 years of marriage, did you think that he would be doing this sort of thing to you? This is the second time you've been absolutely rock-solid sure of something in your marriage ("he would never touch the kids"), as though because you've lived with him for a length of time you can predict his actions. But you never answered me when I asked if you predicted his abuse before the first time. I'm guessing you didn't, but I'm guessing you were "sure" you knew him then too.
You are incredibly reluctant to face the fact that you don't really know this man at all. How many serial killers had unsuspecting wives? (Or wives who maybe had an inkling, but buried their head in the sand?)
I find it odd that you will trust a counsellor who tells you to leave, but you won't trust the tens of posters on this thread, many who have been through this abuse before who are telling you to leave. You're just stalling.
I very much hope that he sees the error of his ways, but I doubt he will. I know abusers. They always cry when caught, but carry on doing the same thing because they think a) they're smarter than you, and b) they will get away with it. I also hope that, now he knows his marriage is at risk, he doesn't transfer his attentions to a more pliable target: the children.
It's very upsetting when a poster tells you they're in a vulnerable situation, with even more vulnerable people (children), asking for advice, but ignores it all because it's not what they want to hear, so they continue to hitch their wagon to an abuser because that's the easier option. You love him? He doesn't love you. If he did, he wouldn't have done this to you.