Ironically I was out in that area for vacation last year but I never heard of of the bones at all. It is educational though to hear about this but in the end it doesn't prove Creationism. Finding bones in Cretaceous layers like they did in Moab sounds like a slam dunk until you do the carbon dating on them and find they are no more than 1500 years old. Either they were buried on purpose or they were mining (the latter seems to be the most logical). Either way it seems they were natives (my guess is Anasazi).