Trim fat from steak. Slice steak diagonally across grain into thin strips; set aside.
Drain oranges, reserving 2 tablespoons juice. Set oranges aside. Discard remaining juice. Combine reserved 2 tablespoons juice, marmalade, and hoisin sauce in a small bowl; set aside.
Coat a wok or large nonstick skillet with cooking spray; drizzle 1 teaspoon oil around top of wok, coating sides. Heat at medium-high (375°) until hot. Add steak strips, and stir-fry 6 minutes. Remove steak strips from wok; drain and pat dry with paper towels.
Drizzle remaining 1 teaspoon oil around top of wok, coating sides. Add snow peas; stir-fry 4 minutes. Add steak strips and salt.
Stir in marmalade mixture and oranges. Bring to a boil, and stir-fry 1 minute or until thoroughly heated. Serve over rice. Sprinkle with red pepper, if desired.