Cover and refrigerate shrimp while preparing Citrus Aioli. In a medium skillet bring strained marinade to boiling. In a bowl combine mayonnaise dressing, yogurt, cilantro and orange peel. Stir in reduced marinade mixture. Cover and chill.
Thread shrimp on a skewer and place on unheated rack of broiler pan.
Drizzle with reserved cup marinade. Broil 4 inches from heat 3 to 4 minutes or until opaque, turning once if desired. Add a piece of Florida orange to each skewer. Serve immediately with Citrus Aioli. In a large bowl combine spinach, mushrooms and onions and set aside.