Don't know what ended up happening, but I would have ordered those planes to keep on going to El Salvador and told this judicial hacktivist, "Sorry, the planes have already arrived in El Salvador and everyone has disembarked."
Then I would have told this "judge" that he is free to travel to El Salvador, himself, and try to round them all up for a return flight. As soon as his plane left U.S. air space, I would then revoke his passport and not let him back in the country.