The word game with not being on the call versus not having seen the report was clearly designed to duck admitting he knew about the call because he was on it.
He sees the writing on the wall and that Trump is in deep fried doo doo on this, Giuliani, too. So he is trying to keep in Trump's good graces in case he survives this, but also be able to parachute out if Trump does not.
Good will is one way to put it. I'd say meanwhile as well that he has certainly lost all credibility. As the title of the book goes ..... everything Trump touches dies.