Combine pork and next 5 ingredients (pork through garlic) in a zip-top heavy-duty plastic bag; seal bag, and shake well to coat. Marinate in refrigerator 20 minutes.
Heat moo shu shells according to package directions.
Coat a medium nonstick skillet with cooking spray; and place over medium-high heat until hot.
Add pork mixture; stir-fry 4 minutes or until done.
Divide pork mixture evenly among warm moo shu shells.
Drizzle hoisin sauce over pork mixture, and roll up.