Make your own minds up. Personally think it's suss, timing could be for the Democrats to win 2012.
I'm sure that'll be on everyones mind, but the timing of it is just a bit odd for a conspiracy to really be held up. If the democrats wanted this to impact the 2012 election I would have thought that they would have "released" everything later, especially a month or two before Sept 11.
But in regards to getting out of Afghanistan, killing Osama doesn't mean they automatically get out of there. Theres still plenty of guys who worship everything Osama taught / still willing to die. So, there is still work to be done to "mop" it all up. Look at Iraq, Suddam was hung years ago (the video was leaked so Im sure Osama's death video/picture will be leaked) and shit is still going on there.
Regarding the burial at sea - From what I've read/heard it was done to ensure that his place of burial wont be a shrine, which is fair enough. When I went to see Jim Morrison's grave, it was fenced off because people were having sex, smoking pot etc on it. There are some crazy people out there, so I understand the reasoning. However, I do agree the timing is a bit odd, perhaps it was to ensure the ship/aircraft/personal weren't put in jeopardy by some extremists wanting his body/revenge?