Members of the ecoterrorism gang that torched buildings on Vail Mountain in 1998 will be sentenced in April, a federal judge ordered today. At a hearing in U.S. District Court in Eugene, Ore., two key members of the gang formally pleaded guilty to federal arson charges, although they already had admitted their role in the multimillion-dollar fires. They destroyed several mountaintop structures including the popular Two Elk Lodge, a restaurant that has been rebuilt. During the 10-minute hearing, Chelsea Gerlach and Stanislas Meyerhoff, both 29, acknowledged their guilt when asked by Judge Ann Aiken. Gerlach responded "yes," and Meyerhoff said,...