It was cited, actually - but the link was "unauthorised" and removed. It was from a TED video lecture. (Surely that much information can be given?)
It didn't make sense to me at first glance, and unfortunately it still doesn't. It could have be used to illustrate an over-sensitivity to the subject - you ask a question and they "pin you to the wall" (intimidate, essentially corner you) instead of answering or ignoring it.