After nearly 17 months of investigation, a massive study of Fannie Mae’s recent scandals pounds the GSE with tons of evidence of accounting and management misconduct, placing particular blame on former CFO Timothy Howard and former Controller Leanne Spencer for knowingly departing from GAAP accounting. While the 2,600-page report does not consider former CEO Franklin Raines complicit in the accounting misdeeds, it does fault him for contributing to “a culture that improperly stressed stable earnings…