This first step is very important. Don't skimp (please note sarcasm). Place pork chops through dry ground mustard and 1/2 cup water in the slow cooker. Stir until dry ingredients have disappeared. Place the top on and SET IT AND FORGET IT! Eight hours on low or 4 hours on high.
Anywhere between an hour or 5 minutes before serving, use a slotted spoon to fish out pork chops and shred them using two forks. Meat will be so tender it should fall apart easily. Return meat to slow cooker.
Combine cornstarch and water in a small bowl and whisk until smooth. Add to slow cooker mixture to thicken up the sauce a little. Stir.