Yes, these are legit. They were posted by Ndamukong himself on his VERIFIED twitter page... how much more legit do you need? As a sneakerhead myself... I know lots about the nike air force one. Nike has put out a countless number of special edition shoes like this. There is a good chance that there was only one pair made or a small amount for that matter. As far as these being "Rushed"... I think you guys have the wrong idea with these. These aren't going to be the flagship "Nike Air Ndamukongs"... these are probably something Nike said that they would do for him with his input. He is signed to Nike after all! Nearly every possible way of redoing the air force one has been done, this was nothin for nike to do for him. I've also heard people say that Nike will do a pair of custom air force ones for you when you visit their factory or something like that.
With that said, I can't find these anywhere or find anything else about them. I'm going to a signing event soon and I NEED to find these before then... If they exist of course.