as a technician i am well aware how easy it is to make a mistake during a live show. usually they result in one of two responses, depending on the crowd:
1: a brief snicker from the audience, and we all move on with the show and forget about it.
2: the event organiser shits themself with anger and you never hear the end of it.
i love this story though, not only was the response a matter of hilarity, but the conversations leading up to it in the tech-booth were probably very much in the key of "what would be the best possible headline you'd like to see?"