It's all part of "O"'s plan. He said he was going to close Gitmo. This way, the Cubans demand it be closed, and in the name of good foreign relations, "O" does just that.
He gets more than just a "twofer", he get a bunch of support from big biz, loyal "progressives", Gitmo closed and turn a bunch of his fellow muslim terrorists loose, and glory from the rest of the socialist/communist world for his humanitarian work.
Ed