I've never been in the position that I've had to deal with this. Is the best you can do in this situation to pull the files and optionally republish them to a robots.txt'd path (with authn/z, too)? I can't imagine you can get it pulled from search engines very quickly...

There's a way to submit a request with Google ticket content taken down and then the easiest way would be probably to do a no index in the header response for future content