It stands to reason that there would need to be a mole in Trump's administration who has the ability to access Trump's private conversations.
GOPe / RNC WANTED him! They wanted someone compromised and controllable or weak and ineffectual. They wanted someone who would either lose or who would be a contollable soft progressive globalist like they are.
My money is on Prince Reibus. I never trusted him to be chosen for his job, but I gave Trump the benefit of the doubt of turning him into an asset, but maybe Trump took him on to get him out of the RNC and then setting him up and backing him into a corner exposing him as a traitor so he can be fired and charged with a crime.