Investors may be seeking to derail negotiations between powerful bondholders and Bank of America Corp. that could cripple the leverage that others have in demanding payback for faulty mortgage loans, said William Frey, president of Greenwich Financial Services. The investors would be picking a fight with Pacific Investment Management Co., the Federal Reserve Bank of New York and other huge players in the market for residential mortgage-backed securities. The Pimco group, led by Houston law firm Gibbs & Bruns, said in December it opened a dialogue with Bank of America over its demands, which include compensation from lenders that misrepresented...