Forget the congressional hearings. Forget the dozens of class-action lawsuits. And most of all, forget those tell-all books that are just starting to come out about the Enron mess. The real work in getting to the bottom of all those off balance sheet partnerships and complex financing deals is going on in the oft-ignored bankruptcy proceeding for the Houston-based company. Earlier this month, a special examiner in the bankruptcy case filed a mammoth motion seeking documents from some 200 financial institutions, law firms and accountants that had a hand in arranging at least 80 different off balance sheet partnerships and structured finance deals for Enron. The 185-page legal motion appears to be one of the most sweeping attempts by anyone looking into the Enron affair -- including some government agencies -- to try to unravel the labyrinth of mind-numbing transactions that brought Enron down. And if the examiner's motion is approved by the bankruptcy court, it means some of Wall Street's biggest banks and brokerages will have to turn over a treasure trove of documents that may finally spell out just how deeply they were involved in Enron's apparent scheme to inflate its earnings.