Mix, salt, pepper and red pepper together. Rub into the ribs. Add vinegar and hot sauce. Cover and refrigerate overnight. Roast ribs in 350 degree oven for 2 hours. Increase heat to 400 and roast for another 30 minutes. In blender, puree celery, bell pepper, onion and lemon juice. Place into a saucepan and simmer for 20 minutes. Spoon over the ribs and serve.