For the orange-ginger glaze: Combine the juice, sugar, tamari, peppercorns, ground pepper, salt, anise and ginger in a saucepan. Cook over high heat, stirring occasionally, until reduced by half. Strain and cool.
For the grilled boneless short ribs: Toss the ribs with 1/2 cup of the glaze, reserving the remaining glaze. Set aside the ribs at room temperature for 30 minutes. Prepare the grill for direct grilling at medium-high heat. Remove the ribs from the glaze, shaking off the excess. Brush the ribs with the oil and sprinkle with salt and pepper. Grill the ribs until nicely charred and still pink in the middle, about 3 minutes each side. Brush the ribs occasionally with the reserved glaze.
For the green onion-peanut relish: Combine the peanuts, onions, sugar, allspice, cinnamon and sprinkle lightly with salt. Transfer the ribs to a platter and top with the green onion-peanut relish.