Place corn in a stockpot; cover with cold water. Soak 20 minutes; drain. Carefully peel back corn husks to within 1 in. of bottoms; remove silk., In a small bowl, mix remaining ingredients; spread over corn. Rewrap corn in husks; secure with kitchen string., Grill corn, covered, over medium heat until tender, 25-30 minutes, turning often. Cut string and peel back husks.