Remove inner skin from spare ribs and discard, if necessary. Spray the inside of crock pot with a cooking spray. Season generously the fronts & backs of the spare ribs with salt, pepper, garlic powder, onion powder, and paprika. Place ribs into crock pot. (Cut into sections to fit in crockpot.)
Combine barbecue sauce, brown sugar, garlic, Worcestershire sauce and ceyenne pepper in a bowl.
Slather sauce onto the ribs to coat.
Cover and cook on low for 8 -9 hours or on high for 4 -5 hours.
Once they are falling off the bone & tender, remove and place onto a foil lined deep baking sheet.
Preheat oven on Broil or 450 degrees.
Slather sauce from crockpot onto the ribs.
Broil in preheated oven for 10 minutes or until ribs begin to char on the ends.
Serve and enjoy!