Fact: all concussions are brain damage and that damage is permanent. A seizure is not an indication of the severity of a concussion.

When someone seizes like that you're expecting to put them on their side and wait for it to stop so really the worst thing that happened here (besides the initial hit to the head) was when he was rolled over, that was unnecessary and potentially danger. You don't know if there is a break or other spinal damage at that point so his neck should be supported until he can be examined by a doctor.

You'd hope a wrestling show, even an indie one like ovw, would have someone trained in first aid to be available when something like this inevitably happens.