If you want them to fall off the bone, I would suggest wrapping in foil with some applejuice, or some other liquid (Jack, Turkey, Kentucky) and then put them back in the heat (200 deg) for 60 to 90 minutes. You will see the meat shrink up a bit more off the end of the bone. The problem with this is picking them up. It is difficult to do anything with the ribs but stuff it in the mouth.