…so now that timeline is along the lines of:
24 March 2017: Vimeo receives an email from IFPI referencing a 21 March email [which Vimeo did not in fact receive, according to Vimeo Support] and complaining that 16 videos are still accessible
24 March 2017 at 12:29 pm: Vimeo removes my video (and presumably the rest of the videos at the urls listed), sends me an email that it was removed, and and a message on Vimeo saying it was removed
Maybe it’s just me, but email stuffs sounds a bit… shady on IFPI’s part? And apparently the version of my vid on Vimeo only had 3 views at the time it was taken down. Also, the Vimeo Trust and Safety people are apparently reasonably prompt at answering stuff, so that's something.