Something similar happened to me in San Antonio a few months ago. Someone made a joking comment about whether or not we were drunk after a somewhat turbulent descent from 10k to touchdown. We got the gate agent, explained what had happened, called the chief pilot, told the chief pilot what had happened and that we were not impaired, had the gate agent confirm to the chief pilot that we were, in her opinion, not impaired, and boarded about 15 minutes late after we sorted it out. Unfortunately, the passenger was getting off, not on, so we couldn't make an example of him.