Let him take you to court, see what the fuck that he is going to charge you with. A citizens arrest of driving recklessly? Take him to court for recklessly driving half the flow of traffic and causing three-mile long pile ups. Seriously, I can not think of one thing that he could take you to court for. Whenever people get pissed off, they say dumb shit like, 'I am going to sue you, and we are going to court over this'. etc. etc. I am 100% positive that you have nothing to worry about. That is unless he starts claming that you are giving him physical and mental anguish.