Having the court on the side of the resistance adds heft to the Trump is bad and Barr is his toady. That narrative exists and will persist no matter what. That narrative doesn't take a Trump pardon.
Look at the flip side too. If Trump doesn't end the fiasco, the pressure is on the resistance court. Meanwhile, unlike Stone, Flynn is not facing impeding incarceration.
No matter which way or when the Flynn case resolves in court, both sides will use the case for narrative.
It's going to be tough for the resistance courts to send Flynn to jail under the circumstances. It's tough enough for them to belay dismissing the "lied to the FBI" case. Jailing for withdrawing a guilty plea when the FBI investigation and Special Council conduct have been exposed in Motion to Dismiss won't fly. The people will be all over Congress. We see what is going on, and we see that Congress is indifferent.
I agree but also think that narrative would be more persuasive with the CNN/MSDNC crowd if Trump were forced to pardon/commute before the election. Maybe that will not happen, because maybe Flynn will not be sentenced before the election. After the election, they could try to impeach Trump again, but I doubt that would result in a senate conviction.