PREHEAT oven to 350°F. Remove papery outside from head of garlic; separate into cloves. Place in 8-inch square baking pan. Add 2 Tbsp. of the olive oil and the chicken broth. Bake 25 to 30 min. or until garlic is soft. Cool. Meanwhile, preheat grill to medium heat. Grill steak 8 to 10 min. on each side or until cooked through. Refrigerate until ready to use.
REMOVE garlic pulp from skin; place in medium bowl. Add mayo, 1/4 cup of the mustard, the lemon juice and 2 Tbsp. of the parsley; mix well. Refrigerate at least 1 hour to allow flavors to blend. Mix roasted peppers, sun-dried tomatoes, remaining 2 Tbsp. mustard and remaining 2 Tbsp. parsley in medium bowl. Gradually add remaining 2 Tbsp. olive oil, stirring constantly until well blended. Add crushed red pepper; cover. Refrigerate at least 1 hour. Remove from refrigerator about 1 hour before serving; let stand at room temperature.
SLICE steak. Arrange on 8 serving plates along with the tomatoes and asparagus. Top with about 2 Tbsp. of each sauce.