Douglas Fierberg, a lawyer for DeVercelly's parents, said Torney's cooperation "will result in the release of significant evidence establishing the responsibility of Rider University and Phi Kappa Tau fraternity."
Torney still faces criminal charges of aggravated hazing in the case. Fierberg said he could not characterize the evidence Torney could provide until after the criminal case is settled.
DeVercelly, an 18-year-old freshman from Long Beach, Calif., was a pledge at Phi Kappa Tau when he attended a party there on March 28, 2007, and drank most of a bottle of vodka. He had a blood-alcohol level of 0.426 percent, or more than five times New Jersey's legal limit for driving, when he was pronounced dead March 30 at a Trenton hospital, authorities have said.
Prosecutors initially charged two Rider administrators in the deaths along with Torney and two other students.
The charges were eventually dropped against the officials at the private central New Jersey college and the other students pleaded guilty and entered a pretrial intervention program that could keep their records clean.
Torney, a 22-year-old from Randolph, has previously rejected plea deals. A lawyer said he was not in the room with DeVercelly and did not supply alcohol for the party.
Neither Torney's civil nor criminal defense lawyer was available to comment Friday.
The fraternity has since closed its chapter on campus.
