Why would you discuss with that guy and not just walk off??? As a matter of fact, others would come back with a blank gun or some friends to than counter dominate the small spot infront of the club by being activly aggressive. In the end it won't be more than pushing each other and hurt egos, but it is anyway only about the ego. And if it ends in a drive by you have main media reports about it.
Me? I do have to explaine why I'd walk off silently? What is wrong with you???