My personal theory is that The Donald flipped [RR] when he took him for a ride on Air Force One (to Florida, I think).
Remember that? And The Donald got off the plane and said what an awesome dude the weasel was?
In my minds eye, The Donald slid a folder across the table to [RR] just like they do in the movies. [RR] looked at it, gulped, and instantly become another Trump property.
I don’t think he needed flipping. Some who had been aware of what had been going on were just biding their time, waiting for a new sheriff to arrive. Barr wasn’t faking his speech at RR’s retirement party.