Somebody on VO said they were taking UTAU stuff, too. Not that a random person without references is a reliable source, but that could explain why some of my favorite UTAU reprints have been set to private (somebody on VO suggested setting them to private to avoid being found and taken down). If they were taking down UTAU as well, I'd imagine that it'd be limited to the VIPpers and other big-name Japanese UTAU. Unless, of course, they're doing it with tags, and many of us use a "vocaloid" tag to reference the original song.
I thought we were safe from this, but...*sigh*
At least there are no reports of specific UTAU videos yet.