Preheat the oven to 450 degrees F.
Season the beef ribs with salt and pepper and place on a large baking sheet. Roast until the ribs start to brown, about 30 minutes.
Meanwhile, mix together Nancy's Quick Fix BBQ Sauce, the broth, garlic, onions and beer in a large Dutch oven and bring to a boil. Lower the heat and simmer for about 30 minutes.
Transfer the browned ribs to the Dutch oven meat-side down. Lower the oven temperature to 325 degrees F, cover the pot and transfer it to the oven. Braise the ribs until tender and cooked through, 2 to 2 1/2 hours.
Prepare a grill for medium heat.
Put the ribs on the grill (reserve the sauce in the pot) and grill, turning occasionally, until caramelized, 8 to 10 minutes. Top with the reserved sauce and serve.
Put the salsa, sugar, cumin and paprika in a medium saucepan over medium heat and bring to a simmer. Cook until the sugar is dissolved, 8 to 10 minutes.