SLM deal, back out please

--buyers group, K.C.Flowers & Co. back out of the deal --ho far can J.P. Morgan Chase and BOA push their own agenda without being snared in litigation. --Doubts have been swirling around the deal for months, but the drama came to a head yesterday as UBS AG infomed a group of bankers that he wasn't prepared to pay the price --two material changes a. legislation is against its business - but Mr. Flowers praised the mertis of the deal to investors after the legislation came out of light. b.oveall economic environment is unfavorable