Video "Shows Runaway Tube Train"

Well, that's what the headline on the BBC London article says. Actually, the video depicts a monitoring display from a London Underground control rooms, which does show how close the runaway engineering train (a rail grinder unit, our friends at London Reconnections confirm) came to hitting a southbound Northern line train last week. Kudos to the LU staff involved for ensuring nobody was hurt. We'd love to see a real video though, particularly of the moment when (as described by the Rail Accident Investigation Board) the crew of the engineering train "jumped off the unit as it passed through Highgate station".