My thoughts also. They can quickly deport someone when they want to, but they let thousands of undocumented Democrats loose on the streets of America who were suspected of criminal activity.
http://shoebat.com/2013/04/18/exclusive-photo-of-alharbi-in-hospital-and-more-evidence-of-coverup/
I think that the deportation was a compromise between Obama and the Saudi official that met with Obama after visiting the guy in the hospital.