Heat a large nonstick skillet coated with cooking spray over medium-high heat until hot. Add shrimp, and cook 3 to 4 minutes or until shrimp are done, stirring occasionally. Remove shrimp.
Heat oil in pan over medium-high heat. Add celery; cook, stirring constantly, 2 minutes. Add bok choy, pea pods, and green onion; cook, stirring constantly, 4 minutes or until bok choy is just wilted. Add remaining ingredients and shrimp; cook, stirring often, 3 to 4 minutes or until thoroughly heated.