President Obama admits he doesn't have a solution, saying "there are no neat and easy answers here." He has a plan but it is expected to be unable to provide a real solution for as many as 100 of the GITMO prisoners who cannot be repatriated or freed in the US. The president seems to be leaning towards holding them indefinitely in the US without trial instead of at Guantanamo, and that's really no solution at all. It's still a violation of their right to a trial and some sort of justice. And if they are going to continue to be held without trial, the prisoners might actually prefer the balmy climate of Cuba to a concrete cell in the frozen wastelands of Montana or northern Michigan.
There aren't a lot of other options. We can't set them free in the US, we can't send them home and we can't legally hold them forever without trial. What does that leave?
It's tempting to apologize to the acquitted terrorist, drop him near the fighting in Waziristan or Somalia with an unloaded AK-47 and then turn a blind eye as a soldier — perhaps a Pakistani soldier for propriety's sake — with more common sense than our government, shoots him as an enemy combatant. That wouldn't be nice, and the backlash would be horrendous if it leaked, and it's guaranteed to leak.
Or we could take that idea to a higher and even more draconian level that will appeal to fans of the New World Order. Tag them with the dreaded GPS locator chips which are now being put in dogs by the humane society and which some people are suggesting we put in our kids. Then release them in a terrorist controlled area and track them until they meet up with some terrorists and call in an airstrike or a drone with a Hellfire Missile and take them and their friends out. Even less nice, but we might have plausible deniability if we claimed we targeted the other terrorists, not the recently released guy with the chip.