But he certainly wasn't the QB that called the play.
It is true that a contingent of influential donors had converged upon Jarmond with a bag of cash in hand to demand Chip's firing. It is furthermore, also entirely true that Jarmond was fully receptive to the idea. The problem however, was that amongst this influential group of donors, there was one very notable name missing, and when his Highness Casey Myers Wasserman. And when poor Casey discovered that something he hadn't personally authorized was going on behind his back, he responded as though it were a coup attempt to overthrow his absolute power at UCLA. So in response, he did what any silver spooned spoiled brat would do in his place, he ran to daddy (Chancellor Block) and demanded that he step in and prevent Jamond from firing Chip, making some veiled threats about what would happen if he didn't, and then he took to the media to offer his support of Chip.
So yes, Block did block, but if not for a really crappy arena ball level play that Wasserman drew up, we'd be looking at a very different situation in the program right now. With Chip being retained, more than a few prominent boosters have made good on their promises to withhold any payments to the athletic department, and some to the university as a whole - not because they are trying to hold the university hostage to the Athletic Department, but because they are thoroughly disgusted that Wasserman was allowed by the person at the very top to do exactly that.