I am sorry but you are wrong. Robert Hanssen, who was also arrested for espionage, also took a deal. He was to be spared the death penalty and he would have some freedoms in jail. Part of his plea was that he had to pass a lie detector test. When he failed the test, they reneged on their part of the deal. He now spends 23 hours a day locked up in a supermax prison.
His failing the lie detector test did not automatically withdraw his plea and his deal. Nor did it do the same when Pollard gave the interviews.