Why did Burford Capital Ltd. have a change of heart about backing the Ecuadorian plaintiffs seeking to enforce a multibillion-dollar judgment against Chevron Corp.? According to a declaration filed in April by Burford CEO Christopher Bogart, his litigation funding firm abandoned the case after it realized it had been duped by the Ecuadorians' lawyers at Patton Boggs. But in a new court filing, Patton Boggs tells a very different story, saying that it was "[thrown] under the proverbial bus" after...