OK, enough already. I don't know what's up with Blogger's "Scheduled" function, but on at least three occasions in the last week I've gone to bed having made sure nothing will run for a week or more, then find a random post published.
I truly don't think its user error at this point, so I may just let 'er rip, post everything, and be done with it. Bleepin' Google. This is why I Bing.