His biggest problem appears to be the images (and possibly other resources included in the pages). It's pretty much a given he'll be able to recover the text itself.
There are many, many images in the pinboard archive, a couple of hundred posts' worth. I don't know if he also has other sources from which to retrieve them, he doesn't seem to have grabbed them from pinboard yet. But a good chunk of his stuff will be recovered, images and all.
He wrote a blog post (maybe more than one) about how he was hosting his images from Amazon S3. Did he not follow through, or did he switch away from that?
