Wall saying that Barr may have information that he does not released to the public, and that is part of the DOJ's decision to drop the case is the big takeaway here, I think.
Besides emphasizing the role of the executive branch, and why the courts have limited power, it brings out some possible Sullivan motives.
For example, are Sullivan/the judges/the courts being used to ferret out information about ongoing investigations. Could it be the judges are being given marching orders to find out who in the DS are on the hook.
A good sign, if true, because it means no leaks are coming from Barr's side.