Spicy Brown Mustard Smoked Pulled Pork

Name: Spicy Brown Mustard Smoked Pulled Pork
Ingredients: 1 (9-10 lb.) pork shoulder roasts (bone in), remove thick top layer of fat trimming down to ⅛ thick; 1/4 cup spicy brown mustard; 1/2 Tbl. worcestershire; For Rub:; 1/2 cup packed dark brown sugar; 2 1/2 Tbl. garlic salt; 1 1/2 Tbl. smoked sweet paprika; 1 1/2 Tbl. Cajun seasoning such as Slap Ya Mama; 1 Tbl. coarse ground black pepper; 1 Tbl. onion powder; 1/2 Tbl. garlic powder; 1/2 Tbl. chipotle powder; 1 tsp. smoked salt; 1/2 tsp. dry ground mustard; 1/4 tsp. ground cinnamon