H/T to commenter Bruce from Oz, who points out:
Sullivan has granted 'Leave for filling' on the Goelman letter (also contains the letters in question). This is going to drag on.
Aitan D. Goelman is Peter Strzok's lawyer, and this is his letter. In the letter Goelman complains that Strzok's handwritten notes have been "altered." What he means is that dates have been added to show the date of the notes (these additions by document reviewers are set off in boxes), and he complains that one date is inaccurate. He also complains that Sidney Powell has violated an order not to supplement pleadings until the government's "Brady" production is complete.
Roscoe Davis argues that this signals that Sullivan will seek to hold additional--evidentiary--hearings to drag the case past the election. Davis also points out that none of this has anything to do with Flynn himself, or with the DoJ decision to dismiss the prosecution.
I hasten to add that Sullivan allowing this letter to be filed doesn't mean that there actually will be hearings on the matters discussed in the letter--nor does Goelman request any particular action. It's all up to Sullivan. However, it seems to me that if Sullivan seizes on issues of this sort to prevent expeditious dismissal of the Flynn case, then AG Barr needs to find a way to play some hardball with the Judicial Branch, which is increasingly out of control. Joining an appeal to the SCOTUS would seem appropriate.