I know you can get individual pages of an authority site deindexed if the links you build to it are shitty enough.
I recently worked on a PR7 education authority site that had individual pages deindexed from a horrific link building campaign by a previous consultant.
I guess you could look at negative SEO if all other methods don't work, depends upon how your morals are feeling?
I've personally never done it myself, though I have been on the receiving end from competitors, what holds me back is that I never know who has done it and would hate to ruin an innocent persons income.