Nancy, that is usually a sign of a light stroke. The fluttering to the floor, the imbalance, the foot balling up. I have had that happen twice and both times were with mine eating some people food that evidently set it off (that's what my vet said later and YES they had had some people food of some sort) Of course a scare might cause a stress level that could cause a stroke as well.
I turned on a lamp and held mine right up close to me chest almost under the lamp shade and they recovered in just a few minutes. That's a scare and a half!!!!
I simply don't give mine anthing but some broccoli, carrots, pellets and a few seeds. Mine never did react to the foods when they were younger. That happened in the last 6 months. they are about 10 years old.
Best wishes that it doesn't happen again. Mine have been fine since then.I used to raise finches and now and then would have a sick bird. The lamp is the first thing I grab and that little bit of heat has never failed me yet.
Hope Bubba will be OK now