Cut the rack in half.  Mix all dry ingredients in a bowl and then apply
as a rub liberally to both sides of each half.  In a large skillet with
oil over medium high heat, brown each side of the halfs.  Check your
pressure cooker for specific water and weight amounts, but for my 8 qt.
cooker, 15 lbs, 2 1/2 cups water, cook for 22 minutes.  Allow cooker to
cool, remove the ribs and let them rest, wrapped in aluminum foil for
10 minutes.  Coat both sides of the halfs with generous amounts of
sauce.  Place on hot grill for 4 minutes each side to glaze the sauce. 
Heat the remaining sauce in a dish in the microwave.  Serve and enjoy.