Thanks go out to the anonymous reader who posted a comment wondering where my last post went. Blogger (Google) did not notify me of the issue. The really disconcerting part is the Google cached version of the post was missing as well -- this suggested something very odd going on.
I often write posts directly in Blogger, so I don't have a backup. This was an exception & I did actually have the rough draft, which I would have posted if the old one wasn't restored.