A few obvious problems with Newsweek's hypothesis.
Hasan never deployed. Hasan never saw combat or spent long time away from "home". Hasan wasn't married and had no children. Hasan received promotions despite his obvious inadequacies and psychological profile. Much like a Harvard Affirmative Action student, Hasan was given every advantage because of his religion and ethnicity, his every flaw overlooked for political correctness sake.
The commanders have a big problem on their hands. Now that the soldiers know their commanders don't have their backs, they may become a bit restless. In fact, they may become a military on the brink.
Who will be willing to serve in a military that casually sacrifices his life for diversity and political correctness?
Beware the seeds you sow, General Casey.
The Gunslinger, EOTIS