Short answer: You're stuffed if you didn't do a backup and AFAIK the only way to do that is to "publish" to a folder on your hard drive.
It is stuff like this that don't get much of a mention when Jobs, Inc. does his RDF at his presentations.
Loads of sizzle and not a lot of meat. (Mind since he is a vegan, that's not surprising, I guess.)
It is a massive let's be nice and call it an oversight on Apple's part.