A man was "blown away" by word that his wife discussed having two inmates kill him as she helped them plot their successful escape from a maximum-security prison in northern New York, his lawyer said yesterday.

Joyce and Lyle Mitchell worked as instructors at the Clinton Correctional Facility, where convicted murderers David Sweat and Richard Matt were reported missing June 6. Sweat and Matt remain at large and have been added to the U.S. Marshals Service's 15 Most Wanted fugitives list.

Joyce Mitchell is jailed on charges she gave the inmates hacksaws and other tools used to cut through their cell walls and a steam pipe to get beyond the prison walls. Authorities say Mitchell had planned to be the inmates' getaway driver but backed out.

Authorities have said Mitchell, who got close to the men while working with them in the prison tailor shop, discussed killing her husband.

"Joyce Mitchell tells us that was discussed between her and Matt and that upon their escape they were going to return back to Joyce Mitchell's home at which time Matt and Sweat were going to kill her husband," said Andrew Wylie, Clinton County district attorney.

Lyle Mitchell's lawyer, Peter Dumas, said yesterday that his client was shocked by word of the plot and that Joyce Mitchell had told her husband she couldn't go through with it.

"Toward the end, Joyce had told Lyle -- and we have no reason to doubt it -- that she told Sweat and Matt that she wasn't going to go through with it," he said. "At that point, they threatened her by threatening Lyle, saying they were going to have someone on the outside do something to him or someone on the inside when he was back at work do something to him so I think it was a point of control." Lyle Mitchell is cooperating with authorities and isn't facing charges.

"He's still in love with her, but I don't know that he is going to be very supportive," Dumas said.

Joyce Mitchell has pleaded not guilty.

As the search for the men stretched into a 13th day yesterday, correction officials lifted a lockdown that had limited activities in the prison. They said inmates are eating again in the mess hall rather than in their cells and a number are going to work assignments. Recreation activities and use of the phones are also resuming. Visitors are expected to be allowed starting today.

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Sweat, 35, was serving a life sentence without parole in the killing of a sheriff's deputy. Matt, 48, was doing 25 years to life for the kidnap, torture and hacksaw dismemberment of his former boss.

The Marshals Service said it will work tirelessly to ensure their run from the law is as brief as possible.

"The agency's 15 Most Wanted fugitive list is reserved for the worst of the worst," Marshals Service Director Stacia Hylton said. "There is no question David Sweat and Richard Matt fall into this category."