Just for the sake of cleaning things up, I entered the directory containing these pages in the removal tool for four or five sites yesterday before I noticed the link to this kind of scary page:
The URL removal tool is intended for pages that urgently need to be removed—for example, if they contain confidential data that was accidentally exposed. Using the tool for other purposes may cause problems for your site.
Getting rid of useless pages that cause no harm but never should have been indexed isn't, it appears, the purpose of this tool. So now that I've gone ahead and used it (it worked perfectly, by the way -- the pages are gone) for "other purposes" should I expect the mysterious "problems" for my sites? I've still got probably about 10 domains that I'd like to have these pages de-indexed for, but should I fear this unnamed retribution from an angry G?