I get the picture now, then keep the rest of the co-workers out of it. I thought there were other voices with you already to back you up.

Send him the email and talk to him privately, to just smoke outside, if there's no positive response, and you still feel abused, resort to you last option, BCT all parties concerned. Use a professional tone i.e no capital letters, exclamation and questions marks, infuriating language...etc( I'm sure you know that alright, just a reminder)

Salam