Welcome to DV, Allthings!

A "flash of lucidity" isn't a bad term, actually. Different people categorize "levels" of LDing differently, but from my personal experience (and/or lack thereof), I've also come to call those "pre-lucid dreams." You were aware of the fact that you were in a dream, but that wasn't a conscious thought. It's a large step towards becoming fully lucid, so consider it a good deal of progress!

I've also had some dreams where I've said to myself, "If I were dreaming, I would **..." and it happens. There's some control exerted, but you're not really willing anything to happen. So close!