I guess I'll be that guy and point out how much of a dick the seizure guy is. He probably thinks he should be able to drive and operate heavy machinery without any restrictions too. Seriously, who would do this and thinks it's fine? Inconsiderate self centered assholes, that's who.
Dude has a seizure while skydiving and the jumpmaster saves his life. I would think that if you're prone to seizures you shouldn't be skydiving.
The instructor did the right thing, and he's definitely a bad ass, but as a student (recommended for everyone but required for students) he would have been wearing an AAD. It constantly measures your altitude and airspeed, and if you're still traveling at a pre-determined speed as you pass through a pre-determined altitude, it assumes you're unconscious or otherwise incapacitated and automatically dumps your reserve. So in the event the instructor wasn't able to catch him, he would have, in all likelihood, still been fine.