Alleged Halloween party stabber appears in court By KEVIN LIMITI• Special to www.AllOTSEGO.com COOPERSTOWN – An Oneonta man, whose violent altercation in Unadilla ended in a stabbing and the victim having to be taken by helicopter to a medical facility, appeared in Otsego County court Monday, May 24, to face charges of assault in the first and second degree. Richard Gantt voluntarily agreed to be interviewed by state police, according to testimony. “I was called because it was a serious…