I saw THAT message in October, prior to the election. I have not heard anything that would prove it wrong since, and consider this scenario the most likely...
Ugh, this is pure tinfoil-hattery. *rolls eyes*
I posted similar the day after the news broke. I distinctly remember a news report of one of the attackers yelling “Don’t shoot! Don’t shoot! Dr. Morsi sent us!” The reason I remember was because I didn’t KNOW the thug Morsi was a Doctor, nor a doctor of what. That news report was not available later that night.