Sprinkle scallops with salt and pepper. Melt margarine in a large nonstick skillet coated with cooking spray over medium-high heat; add scallops, mushrooms, and pine nuts. Stir-fry 2 minutes or until scallops are done. Remove scallop mixture from skillet. Set aside; keep warm.
Add shallots and garlic to skillet; stir-fry 30 seconds. Stir in wine and juice. Bring to a boil; cook 2 minutes. Return scallop mixture to skillet; cook 30 seconds or until thoroughly heated. Serve over pasta.
I have been making this for years the key is to sear the scallops separately then place them on top of the finished pasta it's delicious