Your best bet is to 404 or 302 the site/page in question, since most of us are NOT blacklisting for this over the next few weeks.
If you leave a page up there that has a 2257 statement or sponsor links or both, you're going to fuck yourself in the eyes of the link lists, because as soon as they start to check the sites by hand & find a shitload of pages that are 2257 info & ads, I know I will be blacklisting those, mostly because I want all the links on my site to actually work.
I can easily remove 302's & 404's, which means that all the links will go to what they say they are going to.
If you want to put up some sort of 2257 stuff or sponsor ad, 302 the sites to a page that has that info - that would solve the problem on both ends & everyone would be happy
