While I can see Anton's point, it may have been better to just say, "Just to advise everyone that this is a copy of one of our existing textures and we've requested its removal." No moralizing or finger-pointing; leave that for the mods. We all know the problem, and it looks like it's happening less and less frequently because we all know the seriousness of it. Just mentioning it will make the work suspect enough that people will avoid it like the plague.