They did because he forgot to delete his shadow volume copies,
Then he didn't wipe the drive, he deleted some files.
Could the slashdot crew get a fucking clue about how computers work or stop fucking pretending you should be running this site. If the submission is stupid or obviously wrong, don't approve it. If the submission is nothing more than a copy and paste from some other web page, don't fucking approve it. If the submission is to a blog which then references some other article and doesn't actually have any added value, don't fucking approve it.
In short, editors, get off your ass and do your fucking jobs or get the fuck out.