The team winding down Lehman Brothers Holdings Inc. is accusing some of the nation's financial institutions of trying to freeze billions of dollars of Lehman cash earmarked for other creditors to "coerce" a favorable settlement in their fight with the failed investment bank over soured mortgage loans, Dow Jones Daily Bankruptcy Review reported today. In a bankruptcy court filing on Wednesday, lawyers for Lehman blasted the trustees responsible for some 255 individual residential mortgage-backed securities trusts that purchased mortgage loans from Lehman before the financial crisis. The trusts have said that Lehman needs to set aside $12.14 billion to settle claims over certain soured mortgage loans, more than double the amount that the failed investment bank has put aside for the dispute.