After a stabbing defendant refused transport to his June 10 hearing, DC Superior Court Judge Andrea Hertzfeld warned his attorney that he could not avoid court forever. Edward Cowser, 46, is charged with assault with significant bodily injury while armed and assault with a dangerous weapon. The charges stem from an incident at a gas station on the 3000 block of Martin Luther King Jr. Avenue, SE, where prosecutors allege Cowser stabbed another ma…