In a small bowl, mix maple syrup, whole-grain mustard, Dijon mustard, dry mustard powder, brown sugar, sriracha, soy sauce and 1/2 teaspoon kosher salt. Divide mixture into two bowls, and set half aside for basting ribs right before serving.

Preheat oven to 350 degrees Fahrenheit.

Place ribs in a shallow baking dish and sprinkle with remaining 1/2 teaspoon kosher salt and pepper. Coat ribs with sauce, turning so that sauce fully coats each rib. Pour orange juice and wine around ribs. Cover tightly with foil.

Cook for one and a half to two hours, or until meat reaches an internal temperature of 160 degrees Fahrenheit. Remove foil and brush ribs with half of reserved sauce.

Preheat broiler. Broil ribs for two to three minutes. Remove and brush with remaining sauce. Serve warm with pan sauce.