Cabinet war papers: stupid tactics

Why on earth did the someone not simply leave them on a train seat/back of a taxi/on a memory stick in the postal system somewhere, then everyone would have tut-tutted but believed that they had been irrecoverably lost...

Besides, I know what I would do if I were a Cabinet Office typing pool member who happened to have the minutes on a disk somewhere - it is surely a greater duty to the rest of us to be sure that Blair and Co hang for their transgressions than to keep one's job in the centre of the Beast's lair.