You're close.
Obama does want out of this war. He's wanted out since the campaign. This is his sneaky way of going about it. Instead of just leaving, and giving his critics an unlimited amount of ammunition to use against him as being weak, a sellout, and even a taliban sympathizer, he's leaked these papers in an effort to turn public opinion against the war. With the majority of the public believing that the was is "unwinnable", it would be much easier for him to turn tail and run.
The man is without any honor or love for this country. It's all about him and how he can save his agenda.