What was found
WHILE ENROUTE TO DCA, CREW RECEICED AN IB FLIGHT SPOILER AND IB SPOILERONS CAUTION MESSAGE. THEY RAN THROUGH THE QRH AND DECIDED TO DIVERT TO IAD. THEY DID DECLARE AN EMERGENCY BUT DID NOT HAVE THE CABIN BRACE. FLIGHT LANDED IN IAD WITHOUT FURTHER INCIDENT. INBD FLT SPOILER AND INBD SPOILERON CAUTION MSGS IN FLIGHT / PERFORMED SYSTEM RESET, MESSAGES CLEARED AND DID NOT RETURN."