Follow up ... a little slow thinking about it, but .... maybe ...
Do you make backups of courses ... like after adding content/assignments/etc. to a course and maybe right after students have submitted something major?
Hmmm ... might be a good practice/habit to get into ... add work/major work ... backup the course. Students take major quiz or have completed an assignment ... backup the course ... even if you haven't graded anything yet.
Probably too late for this ... hosting providers sometimes do offer a backup service ... where they will backup your slice of a shared server. Dunno if GD has that or not. They might do such things for major issues with hardware, which you, the customer, has nothing to do ... but they might only do those once a month. Dunno if GD has that either.
Here again though ... those backups are good only up to the date they were performed ... they cannot do Vulcan Mind Melds with customers! ;)
'spirit of sharing', Ken