Glad to hear that our Carl is okay. I don't know what anyone else thinks, but to me it also could have been some kind of a seizure. Once with my Bailey, she woke up in the middle of the night and couldn't quite walk right, sort of in a daze, and stumbled around. We were going to take her to the emergency vet, but by the time we got dressed, she appeared to be back to normal. Keep a close eye on Carl to see if he has anymore episodes of a similar nature. If he does have more, keep note of how long they last and record the time and day they occur so you can tell the vet. My Bailey only had that one episode.