After Pleading Guilty In Slaying, He Demurs Underwood Claims Poor Representation By PARKER FISH • Special to www.AllOTSEGO.com COOPERSTOWN – Appearing in Otsego County Court today, Joshua Underwood, 26, withdrew his guilty plea in the New Year’s Day slaying of Mark Morrison, 52, in a downtown Oneonta apartment. He appeared before county Judge Brian Burns, who read his statement into the record that claimed inadequate representation from Otsego County Public Defender Bruce Maxson, and asked for a new lawyer.…