Its good that you cushioned him to keep him from banging himself against the wall and toilet. I have never heard of being scared into a seizure. Seizures are abnormal electrical firing in the brain that can be caused by any number of things from lesions in the brain, tumors, small injuries that may not show any symptoms after the initial injury, and can also be caused by metabolic imbalances. Xanax is not for seizures and I would not use it even as a calming agent for storms. Time for a good checkup by the vet. A seizure once a year is managable and you may want to consider putting him on seizure meds. That is something to be discussed with your vet If the seizures are self limiting to a very few minutes or less, we let them run their coarse, keeping patient safety in mind, and only give them valium if the seizure doesn't break on its own. Bear in mind that there is a postictal stage after a seizure where your pup may be confused, anxious, ataxic/wobbley on his feet or very groggy. It can last from a few minutes to a few hours. Here again, safety is your priority. Call me if you want to chat. Kiss Steak on that beautiful face.
YEP, agree with above! Judy would be a good source.