Spengler thinks this might be the case:
Ironically, Bin Laden appears to be a casualty in the great Arab breakdown of 2011. We can only guess as to the details of his demise, and may never know the entire truth. But it is a fair conclusion that he was crushed between the tectonic plates now shifting in the Muslim world.
That makes American self-congratulation over the killing a bit unseemly. American special forces may have been the proximate cause of Bin Laden’s violent death, but the efficient cause is a great strategic upheaval that America does not yet understand, and is not prepared to respond to.
h/t Michael Reynolds