It's possible that someone with considerable influence is trying to stack the legal deck against WMI because they took private equity and money from the Chinese to stay open.
It's a bit like the kettle calling the pot black but it happens.
Someone, such as Paulson, thought he had to do something about that and he helped bring WAMU down, in a very messy and botched manner, implicating the FDIC in the fraud, misrepresentation and illegal seizure of WMI property. He may have thought he was doing something good for the U.S. banking system; helping JPM look solvent and punishing the West Coast banking titan for using Chinese money.
My opinion? There was a better way to do that! lol