The corporate takeover of 10 Sonic drive-ins around the Columbus, Ohio, area got off to a bumpy start after workers at three of the hamburger chain's restaurants walked off the job en masse and caused a local stir with their parting sentiments. "Due to terrible management the whole store has quit," reads an expletive-laced goodbye note taped to a window of the Sonic restaurant in Circleville, where another handwritten sign read, "Thank you, next,"...