Not since Walter Palmer, a cudddly Minnesota dentist, put down his drill and vanished off the face of the earth having made sure that Cecil the Lion took a crossbow bolt for the team, has there been a disappearance quite like it. I refer of course to Craig Joubert, the hapless Durban-born referee last seen leaving scorch marks in the Twickenham turf as he sprinted for safety after mistakenly (as it turns out) awarding the Australians a penalty in the last minute of the Rugby World Cup quarter-final against Scotland.