I didn't especially like mine anyway... meh.
Too bad, because I fixed it.
Is it going to happen again?
Not any time soon. It's only needed when the attachments folder fills up, which only happens every six months or so.
...it was only done because some limit or another was reached.
And it was done the wrong way. I took a look at the control panel and figured out the right way to do it (coincidentally, ten minutes before Fury posted the link in the admin forum) so it won't happen that way in the future. The control panel has a feature that allows us to delete all attachments older than a certain number of days (25 by default), so it's handled automatically.