Place pork loin in a roasting pan. Combine the rub ingredients and rub over the pork. Cut each strip of bacon in half crosswise and lay them over the pork loin. Roast for about 1 1/2 to 2 hours, or until the pork registers about 150°.
In the meantime, combine the brown sugar, flour, cider vinegar, and dry mustard in a saucepan. Bring to a simmer and simmer for about 1 minute. Spoon over the pork and return to the oven. Roast for about 15 to 20 minutes longer, or until pork registers 160°.