I deleted my facebook account 6 months ago by emailing them. Sure enough my account was deleted. However, to this day I can still view my pictures using the direct links intended for non members to view your pics.
I've emailed them a few times and have received 3 different replies. First was that it would take time and eventually my pictures would go away. Second explanation was that my pictures would never go away. Third reply refuted the second reply and basically told me to be patient as they would eventually go away. I'm still waiting and I suspect what they have told me is pure horseshit.