For the record I'm not really okay with how a lot of people react to someone freezing up like that. It's not a fun thing to experience, even if you make movies with.. issues.
"Hahaha they shut down over anxieties and had to distance themself!"
It's not exactly something to just snap out of. Excusing yourself is at least a better outcome than staring blankly at the crowd, feeling terribly cold all over and not being able to make a sound.
So, well, let's not make that a thing he can't live down, alright?