CUC buy was essentially a scam. The Williams' lost money in the deal and there were suits brought against them. But yeah, it was not by choice of the Williams. As noted, Sierra was a publicly traded entity. The database for Ken's forum got hosed so it is impossible to search for anything, but if you want to go through it post by post, you can find some inside information from Ken's posts.
This has been discussed endlessly on a myriad of Sierra based boards.