Trim flaps and membrane from ribs. Mix together rub ingredients and reserve 2 Tbl for table preparation. Coat ribs with rub at least an hour before cooking. Combine cider and vinegar and warm to simmering.
Cook ribs over indirect, smoky low heat for 3-4 hours, mopping every 30 minutes after the first hour.
Sprinkle 1 Tbl of rub over ribs while on the grill before removing and heat each side for an additional 30 seconds.
While meat cools, add remaining 1 Tbl of spice rub to the mop and reduce to 2 cups. Season with hot sauce and serve.