Except the Panda updates had nothing to do with spammy links
The company handled data on investing, but their CMS was full of pages relating to totally unrelated things like Nokia phone repairs. It was the standard long tail approach, where a thousand pages of spam getting 10 visitors a day was enough to give them a legit boost on their main pages.
When the Panda update hit, these pages killed the site, and the spammy links propping these pages up were next to worthless.