He is a politicians politician. He is hedging his bets. If Biden gets in he is building bridges, and if Trump gets justice and stays in office Trump will have little choice but to forgive him.
I have always liked that line from Hunt for Red October: “I am a politicisn. That means when Im not kissing babies Im stealing their lollypops. It also means I keep my options open.”
I cannot make up my mind if Mitch is mostly honest or not. Neither option would surprise me. I think I can say he is not OBVIOUSLY corrupt, like Romney and McCain before him.