They shut down traffic to work a fatal accident, he ignored a detective who told him to stop, something happened that led to the guy getting dragged for 30 feet and sent to the hospital with minor injuries, so they arrested him and from the only video I was able to see they were walking pretty calmly with him during the arrest. Once they realized who he was, they let him out of jail in time to play golf, but he's still facing some charges.
Am I missing context where something crazy happened? That all sounds pretty straightforward.
(Aside from the conservative person being shocked and appalled that a wealthy golf player with a little white-person smirk on his face is being subjected to the rule of law as if he was one of the poors, that part I can agree is pretty funny.)