If Flynn is willing Trump should just pardon him at this point and end the travesty.
Let it play out until its on the edge. Allow the tax paying public to see exactly how the system works.
Then pardon General Flynn.
It is better to let this play out and expose how corrupt the judge is.
If Flynn gets a pardon then the media will switch the narrative to President Trump bailing out another of his corrupt criminal cronies.
I think Flynn would rather not. At least not before the election.