I think it just means something different than the norm. "I'm having a moment" can be something positive in certain contexts.
"Needing a moment" or "I need a moment" in American English is the negative version.
"I'm having a moment" (I'm being dumb, I was being thoughtless, I am confused) and "I need a moment" mean two different negative things to this American.
Good to know, thanks. Maybe I'm pre-conditioned to look for idiom-bending uses in blog post titles!