He really must be an unprincipled narcissist: A charlatan—is a fraudulent, exploitative, deceptive and unscrupulous individual!( That's the definition and it fits him to a tee!!!!) I don't know what to say to make you feel better and even time, a lot of it, probably won't relieve the feelings of anger and distress. I hope your kids are helping you with this and I really think you don't owe that SOB a thing in the way of promoting loyalty from his kids. I personally wouldn't hold back one bit when discussing his lack of character and his personality disorder.
I'd get myself a punching bag and I'd put his face on it!!!