To prepare sauce, combine the first 5 ingredients in a small bowl. Cover and chill.
To prepare pork, cut pork in half lengthwise; cut crosswise into 2 1/2-inch pieces.
Combine apple cider vinegar and next 7 ingredients (through garlic powder) in a medium saucepan; bring to a boil. Add pork to pan. Cover, reduce heat, and simmer 1 hour or until tender. Remove pork from cooking liquid; shred with 2 forks. Place pork in a serving dish; pour cooking liquid over pork.
Preheat oven to 425°.
To prepare biscuits, lightly spoon flour into dry measuring cups; level with a knife. Combine flour, baking powder, 1 teaspoon salt, and cinnamon in a large bowl; stir with a whisk. Combine potato, 2 tablespoons sugar, butter, and milk; stir well. Pour over dry ingredients; stir until a soft dough forms (dough will feel sticky). Turn dough out onto a floured surface; knead lightly 5 to 6 times. Roll dough into a 10-inch circle; cut 24 biscuits with a floured 2-inch biscuit cutter. Place on a baking sheet coated with cooking spray. (Reroll dough scraps, if necessary.) Bake at 425° for 12 minutes or until lightly browned. Remove biscuits from pan; cool on a wire rack. Serve with pork and sauce.