The judge later apologized for the remarks. Source of quotes...[www.bloomberg.com]
Here they are....."Judge Says He Regrets Treason Suggestion (12:50 p.m.)
Sullivan resumed Flynn’s sentencing hearing and expressed regret for an earlier statement in which he falsely suggested that Flynn’s activities as an unregistered foreign agent continued into his time as Trump’s national security adviser. Sullivan had asked whether that would be treason.
“I feel terrible about that,” Sullivan said, adding he had never presided over a treason case. Prosecutor Brandon Van Grack confirmed the facts and said that “the government has no reason to believe that the defendant committed treason.”"
The judge mistakenly believed some activities took place while Flynn was National Security Adviser.