It doesn’t matter what else has been leaked or by whom. If this guy told anything that was covered by the non-disclosure agreement, then he committed a crime and can be prosecuted for it.
That’s the legal reality. I am expressing no opinion for or against the guy.
The guy is going to lose just like this one did
http://abcnews.go.com/Blotter/ishmael-jones-deep-cover-agent-loses-cia-lawsuit/story?id=13949881