2 thoughts, just things I thought of while reading this:
What you described (I think) as disorientation, that was what my Gretchen did for a couple of years before she started having real, can't deny it, seizures. When she did have them the first thing I thought of was how she just stood and stared for a few seconds before. I concluded they were related. Nothing like that has happened since she started taking the seizure medicine.
My husband was frying eggs 20 years ago, and I saw him just stand real still, shake for a minute, then fall. It looked like a seizure to me. The EMTs took him to the hospital, the doctors did whatever drs do, and said he had low blood sugar, and nothing like that has happened again.
(totally not basenji related, but gives us a laugh when we think of it now - my son Nick was about 6, was right there and saw it too, and while I was down on the floor said "You think maybe we should turn off the stove?" I had always thought he was born a little adult)