It was Paul WESTHEAD that was replaced by Pat Riley in the beginning of the Showtime era.
Thanks for the correction. I’m no NBA fan, but I remember the gist of the conflict, if not the identity of the coach. It really has to be something when the team owner hires the coach and says implicitly “you’re in charge”, then mentions “well, except for that guy over there - he’s making 13 times your salary and he’s the final word on whatever he likes”.