The annals of race cheaters are quite weird, from Kip Litton to Mike Rossi to Robert Young. But all of those men were cutting the course in road races; this is probably the highest-profile scholastic incident of it yet.
Our friends at MileSplit have done convincing reporting that the athlete has been cheating. Get a load of this gif:
He's standing next to the course, stroking his chin...then he decides to jump back in the race. That was at the Manhattan Invite in October. MileSplit reports that at Saturday's NXN Northeast meet, he didn't have a 1.5 mile split, didn't appear in any race footage before the finish, and ran a season best by over three minutes. That evidence was enough to convince timers and meet management to remove the athlete from the results.
And LetsRun message board vigilantes somehow found proof that this was not a trend that started this cross country season. In one of the strangest race videos I've ever seen, you can see him drop out 500 meters into an indoor 800m, take a breather, then jog across the finish line with the leaders. He's bib No. 11 in a red top in the video.
Don't cheat in races. The running internet has a bloodlust for catching cheaters, and is very good at it.