It's not just our African friends who make mistakes. Back in 2012 an EAT(DHL) A300/600 freighter started to taxi at East Midlands after the tow bar had been disconnected but before the tug had moved out of the way. The tug, one of the really big ones that can push anything, was completely turned round and impacted the side of the aircraft fuselage. Fortunately the ground crew all escaped injury.