Having worked at one of these parks, I can speculate as to what happened:
A worker monitoring the cameras on the ride saw the rider with the selfie stick and did as they were instructed, to hit the emergency shut off. This stops the ride, and halts all the cars/trains at their next safety stop point. Once that happens, the only way to get the ride going again is to reset it and do your opening procedures over again. The computer for the ride won't allow the ride to operate unless those checks have been performed and passed. Sometimes it might even require one of the engineers from the park to give their sign-off as well.
But to even begin, you have to evacuate everyone that is currently on the ride. So you have to go out on the track to where they are, release them from the ride, and escort them back to the exit. If there is anyone with mobility issues in any of the cars, that could become a very complicated task. IMO, an hour is very quick to do all of that.