Siezures are normally ok as long as they aren't over five minutes. The fact that it was so short is a very good sign (this is coming from someone going into medical research lol, so i promise i know what I'm talking about xD)
The only fun part of halter training is when they get good enough to walk on the road. Some guy just slammed on his brakes and said he thought I was walking some weird ass mutated rez dog 😂😂