In saucepan, place pork broth, brown and yellow mustards, honey, horseradish, ketchup, brown sugar and garlic. Simmer on low and reduce. Grill pork tenderloin, turning to prevent burning while brushing sauce over the meat. Remove from grill when done, 170 degrees. About 1 hour on low heat. Grill vegetables and pineapple during last half of the cooking time and serve with the meat.