I’ve read the Obama-saves-the-day story and it does have a lot of adherents. Perhaps Ambassador Stevens expressed reservations about the program — not enough to cause him to stay out of Benghazi on September 11, but enough to cause the Obama cabal to fear that he would go public.
When Genghis Khan was buried, they sent out a group of loyal soldiers to bury him in a hidden place. Then, when they returned, these loyal soldiers were murdered by their own people, so that the location would never be revealed.
This is a tried and true strategy.
Another theory is that the Islamists who have been supporting Obama really wanted the blind sheikh to be released. Obama was going to have to brag about killing Osama Bin Laden in order to get the support of Americans (which he did at the dem convention the week before the 9-11 attack), but that could jeopardize the world Muslim support - which may well be where a lot of his campaign contributions came from.
Obama walks a fine line, having to publicly pretend he is against the Islamists at the same time as letting the Islamists know he is really working for them.
There were stories about private negotiations to try to get the blind sheikh released, but it was pretty much known that Obama would be toast if he did so without some kind of political cover for doing so. I should look up and see when those stories came out, and when those secret negotiations were going on - how it ties into the timeline of security problems in Libya. Although we can’t know when Hillary requested additional security and was refused by Obama, since that information hasn’t been released yet.