I don’t think we can wait for a court battle between Congress and the Justice Department to get the most critical redacted details from the Mueller Report. I believe that the Democratic controlled House has all the powers necessary to fill in the missing details quite rapidly.
I propose the following strategy.
1) The House Judiciary Committee subpoena’s Special Counsel Mueller.
2) The Judiciary Committee gives Mueller immunity from prosecution for any and all disclosures of Grand Jury Material.
3) The Judiciary Committee questions Mueller about the gist of any redacted materials that Barr has identified as Grand Jury redactions.
This would result in a very rapid release of the redacted materials and would not depend on any Court calendars, stays, appeals, etc.
I believe that all of the above steps could be completed next week, and there is nothing that Barr could do to prevent the Judiciary Committee from getting the answers they need.