And even as you write that, no niggling questions enter your head? Such as, how did ground seal up rather quickly over a 100 ton airliner?
If the majority of the wreckage was buried, where's the documentation of its excavation? One picture with an engine part curiously poised on a back hoe is the entirety of photographic evidence for the excavation of this buried airliner?
And finally, in a string of assumptions you finish off with a doozy. These murderous jihadists who had already killed physically fit, military trained pilots, were now scared of the passengers who "had a chance of retaking the aircraft" and decided to ground it instead of carrying on with their mission?
Had this not been the national day of tragedy, you would not have turned off your critical thinking skills and would have to admit that the Shanksville site is a curiosity, at the very least.