CACD FRAP Circuit Rule 40, Note (3)
(3) Writs. No mandate will issue in connection with an order granting or denying a writ of mandamus or other special writ, but the order or judgment granting or denying the relief sought will become effective automatically 21 days after issuance in the absence of an order or other special direction of this court to the contrary.
There is a separate and longer time limit if a party decides to move for rehearing, 30 or 45 days (longer for the government). That limit is pointless here, because implemetation of the writ/order at 21 days frees Flynn.
The Circuit Court can order rehearing on its own, provided a majority of the active members chooses to do so. Sullivan and Lawfare can work with their cohorts (for example Wilkins) in the Circuit Court on that angle.
Thanks for your input on the 21 Day Rule. I was hoping for 5 days or something like that. I really fear that we have not heard the last from Judge Sullivan.