I can understand why the judge remains p-o'd with Flynn. The judge tried to get to the bottom of this mess when he took up responsibility for sentencing. Flynn did not co-operate with the judge, and his counsel did not raise the issue of exculpatory evidence.

https://www.scribd.com/document/440044572/FLYNN-RULING

"Six days later, on December 7, 2017, the case was randomly reassigned to this Court, which scheduled a sentencing hearing for December 18, 2018. During that hearing, the Court conducted an extension of the plea colloquy in view of statements made in Mr. Flynn’s sentencing memorandum that raised questions as to whether Mr. Flynn sought to challenge the circumstances of his FBI interview. In response to the Court’s questions, Mr. Flynn maintained his plea of guilty upon the advice of counsel. Mr. Flynn neither challenged the conditions of his FBI interview nor expressed any concerns with the government’s obligations pursuant to Brady v. Maryland ..."

I also very well understand that Flynn was cornered and badly advised by his then-counsel, who had a conflict of interest.

The judge may let Flynn off, and maybe he should, but it will only be after a very thorough sifting of the facts.