I'd like to second what SN said and add stop worrying about how everyone is going to be perceived. Sun as the liar or charmer you as a psycho. None of that will be constructive unless the purpose is to just look backwards assess blame.
Why can't you find grace for a week? I'm sure you can do that, I'm sure you've done much harder things. Your goal is civility and stability in the house...mission statement. Stay focused and don't let yourself be suckered off point. Good luck ...this tape will self destruct in 30 seconds. Cue match and music....