Hi! Just wanted to let everyone know that I saw my neuro today. MRIs and MRAs show no sign of any episode. No stroke. No TIA. Nothing. It doesn't fit any description of any particular thing, so the assumption is that it was some kind of a fluke, possibly connected with a weird, atypical, painless migraine.
Soooo, I'm off the blood thinner. I'm allowed to drive again. Yay, God!