No, no emails. Get DEFINITIVE, 100% proof first, and then confront him in person (rehearsing ahead of time, out loud while alone if you have to), and then you can follow THAT up with an email to clarify any points you feel need clarifying after the confrontation, or add anything you forgot to address. . . .
You are hopelessly stuck in No Man's Land of Passive-Aggressiveness, which is the WORST place you can be. You'd be better off blindly trusting his every move (which I'm NOT advocating!) than you would be to do this halfway-down-the-middle thing, whereby you have no proof of things and you react emotionally and just accuse him anyway.
I'm left shaking my head here, and not sure how to best help you.
