I don't think a judge has the authority to do that. The DOJ can prosecute him at any time, as long as the statute of limitations hasn't run out.
I believe this judge's order only relates to the activities of the grand jury that is currently seated in that district court and is due to be released this week. The order says the DOJ can't keep this grand jury seated indefinitely while it figures out what to do.
What you say about the grand jury makes sense.
My guess now is the meeting was about Rudy. SDNY coordinates very closely with the House Dems. Deep Staters going to back up plans after Schiff’s hearing did not get the desired impeachment hysteria result. The timing is right to open a new attack on POTUS and indict Rudy.
charge or judge starts releasing documents