A Montgomery County judge unsealed yesterday portions of a civil lawsuit brought by Teresa Heinz Kerry over the 1991 death of her first husband, U.S. Sen. John Heinz. Judge Paul W. Tressler's ruling was a split decision for the parties - Heinz Kerry and The Inquirer. While he unsealed all pleadings, motions, petitions and orders, Tressler said that discovery materials in the lawsuit file could be kept secret. Tressler ordered the file be open for public inspection on Monday. But yesterday afternoon, the state Supreme Court granted Heinz Kerry's attorneys a stay that would keep the file closed until the...