Thanks Nutloose, that clears that up.
We rear crew had an escape hatch on the Victor, of course. It was called the door. Success rates in abandoning the Victor were very poor - not sure if there ever was a 100% successful abandonment. Sounds like it was a good plan to forget the whole thing - after all you got a £1m bin bag holder out of it! And in the event, because of the ten's 100% record, thankfully it would never have been needed.