Recovering Markdown

I’m currently using Markdown on Save on a few of my blogs. This morning the internet in my office cut out while I was editing a page that I update almost daily. When I attempted to reload the page, all of my markdown was replaced with HTML. In addition, all of my previous versions (when viewing revision history) were replaced with HTML. Is there a way to recover the markdown?

http://wordpress.org/extend/plugins/markdown-on-save/