I jus hope that it is just a propaganda from some quarter. However, I wonder if the Egypt's new Islamist-dominated parliament has seen this being circulated. If so, they can easily refute the rumor. The question why have they failed to do that as of today. In today's communication environment, these rumors can easily be dismissed, if untrue.
Many people claim that OBL never caused 9/11--and yet OBL, as we witnessed, never disowned responsibility of the 9/11 attacks. If he didn't do it, he could have easily said so gone down in history----unless he actually died immediately before or after 9/11, leaving room for all kinds of manipulations.