A federal judge in Manhattan has taken the extraordinary step of granting Chevron’s motion to depose a counsel for its adversaries in the massive toxic tort litigation over oil contamination in Lago Agrio, Ecuador.

If Southern District of New York Judge Lewis A. Kaplan’s ruling Wednesday in In re Application of Chevron Corp., 10 MC 00002, stands, Chevron’s counsel from Gibson, Dunn & Crutcher and counsel for two former Chevron lawyers facing criminal charges in Ecuador will be able to ask lead plaintiffs attorney Steven Donziger questions, under oath, about his alleged attempts to influence a supposedly neutral expert appointed by the Ecuadorean court to offer a global damages assessment. The judge also has ordered Donziger to produce documents related to his interactions with the expert.