Prepare the pork: Mix 2 tablespoons salt, the black pepper, brown sugar and paprika in a bowl, then rub all over the chops. Wrap in plastic wrap and refrigerate 2 to 4 hours.
Meanwhile, make the sauce: Melt the butter in a saucepan over medium heat, then add the onions and cook until translucent, about 4 minutes. Stir in the vinegar and brown sugar until dissolved. Add the ketchup, apple juice, syrup, bourbon, prunes, Worcestershire sauce, cayenne, 1 tablespoon salt and 1 1/2 teaspoons black pepper and bring to a boil. Reduce to a simmer and cook until thickened, about 30 minutes. Puree with an immersion blender or in a regular blender.
Preheat a grill to medium. Brush the grates with vegetable oil, then place the chops directly over the flame and grill until marked and cooked halfway through, about 15 minutes. Turn the chops and place on a cooler area of the grill (such as the edges); cover and cook until a thermometer inserted into the thickest part registers 140 degrees F to 145 degrees F, 15 to 20 minutes. Uncover and brush the chops on all sides with the prepared sauce, then cover and cook until glazed, about 5 more minutes. Transfer to a cutting board and brush with more sauce. Tent with foil and let rest 10 minutes. Serve with more sauce and Smoky Corn on the Cob.
Smoky Corn on the Cob:
Peel back the husks from the corn and remove the silk. Butter the kernels and sprinkle with salt and smoked paprika. Fold the husks back over the corn and grill over low heat until cooked through, turning occasionally, 12 to 15 minutes.