brotherhood_of_LAN - 6:16 pm on Aug 28, 2013 (gmt 0)
Can't really comment on the legal standpoint re: the company's liability.
I'd investigate whether you can replace the category pages with flatfiles for now, I'd assume the category structure is not updated often so it'd be a workaround. That may be a fix that takes an hour with an .htaccess rule to map category pages to your flatfiles.
It's quite important that the site is sorted for search engines crawling it, and I imagine it'll be hard for them to recrawl your money pages if the category structure is broken. Visitors bouncing from those broken pages could end up being more costly than some changes in your code.