BBQ Pork Ribs with Pineapple

5 lb pork spare ribs
1 1/2 tsp salt
1 beef bouillon cube
3/4 cup water,boiling
1 tsp oil
1 can pineapple,crushed,undrained
1/4 cup brown sugar,dark,firm packed
1 tsp onion powder
1/4 tsp garlic powder
2 tbsp Worcestershire sauce
2 tbsp cornstarch
1/4 cup water,cold

Cut ribs to form individual portions; sprinkle with 1 tsp salt.
Place ribs on a rack in a shallow baking pan; bake in preheated 375'F. oven until almost tender, 1 1/2 to 2 hours. Drain off fat.
Meanwhile, dissolve bouillon cube in boiling water in a medium-size saucepan.
Add oil, pineapple, brown sugar, onion powder, garlic powder, Worcestershire sauce and remaining salt; bring to a boil.
Reduce heat and simmer, uncovered, 5 minutes.
Combine cornstarch with cold water in a small bowl; stir into sauce mixture. Cook and stir until thickened.
Spoon sauce over drained, baked ribs.
Increase oven temperature to 425'F.; bake until nicely glazed, about 30 minutes.