That is very interesting, I definitely think you're right about it in the context of the article's scenario. By abruptly leaving the party early the guest of honor is essentially telling the host "I don't respect you".

It may be more a simple social etiquette thing than a hierarchy thing, but the fact that the host has leadership representing their group here probably infuses it with some level of asserting dominance in response to public disrespect.

Basically walking out on an interview is a great way to disrespect the interviewer, and you probably shouldn't do it if you don't want a fight ;)