They need to release the rest to join the leaders they just released so they can come back to America on a mission, we all know they will thanks to Obama.
Check it out:

Some of the men held here for more than a decade have been drafting plans for work and marriage on the outside or studying languages, preparing for a not-too-distant future beyond the coiled razor wire that surrounds the U.S. prison perched at the edge of the Caribbean Sea.

Until the past week, they had good reason to believe their ticket out might be imminent, if not home then at least to another country. President Barack Obama and others in the administration say they are committed to closing the Guantanamo detention center and military officials say they can resume transfers at a moment’s notice, just as they did with the May 31 swap of five Guantanamo inmates for a captured American soldier.