The most plausible theory I have come across, the one I created, is that this was an attempt to create a Gay Martyr for use in the collapsed Obama campaign. But something went wrong and the ex-Seals refused orders and got killed too.
Because the administration has not provided information on what transpired in Libya (in fact that came out with implausible lies) all kinds of speculations are being made. They have not provided the truth because there is something they want to conceal. There are hundreds of people who have information on this coverup. Some of these hundreds are patriots and will somehow provide their information to the media (non MSM). Eventually the truth will emerge.