I just don't get this, surely as a 767 FO the guy would have been on the ground in places where asylum was available? Surely it would have been a better option to try and make it to somewhere after landing?
Could this have been a more serious event and he either changed his mind or was there to test responses?
After 9/11 any hijack will be viewed as a potential attack on ground targets, he must have known this and therefore put all the passengers lives in danger of being shot down.