Make shallow cuts in steak diagonally across grain at 1-inch intervals. Brush both sides of steak with mustard. Place steaks in a large shallow dish.
Combine wine and next 3 ingredients; pour over steak. Cover and marinate in refrigerator 8 to 12 hours, turning steak occasionally.
Remove steak from marinade, reserving marinade. Place reserved marinade in a small saucepan; bring to a boil. Remove from heat, and set aside.
Place steak on rack of a broiler pan coated with cooking spray. Broil 5 to 7 minutes on each side or to desired degree of doneness, basting with reserved marinade. Cut steak diagonally across grain into thin slices.