1. Coat large skillet lightly with cooking spray, and cook celery, onion, pepper and garlic on medium heat, stirring frequently.
2. Add cooked vegetables, broth, tomatoes, Worchestershire sauce, salt and thyme to slow cooker.
3. COver and cook on low for 4 hours or high for 2 hours.
4. Add shrimp, crab and okra and cook 1/2 hour.
4. Serve over cauliflower rice if in stage 2, or brown rice if in stage 7.