It will be interesting to see what enforcement action the FAA takes, if any.
Even though it's so small it straps onto his back, it goes too fast to qualify as an ultralight. So, it's an airplane, and more noteworthy, it's unregistered.
The FAA has rules up the ying yang for that special use airspace around the canyon, and rumor has it that pilots get busted there all of the time for fairly small violations. It would set an interesting precedent if "JetMan" can avoid any repercussions. I don't think this story is over yet.