He announced his cancer a couple months before he died. IIRC, about six weeks after the scandal broke.
It wasn’t going to be Jay. A friend of mine close to Joe said that Joe didn’t want to hire Jay in the first place. Joe knew it would look bad and wanted Jay to earn his chops elsewhere. It was the OC that hired Jay.
The administration had made it clear they were going to open it up and not automatically hire a current coach. They didn’t like Joe having more power then they and they wanted a clean new start.
Joe probably should have retired about five years earlier. After ‘08 he had the program in great shape. Maybe he though he could one more natty and go out on top🤷🏻♀️