Not realistically at this point.
But anyone in the Executive Branch can be impeached and found guilty, or (easier), can have his funding zeroed out.
On this video the head of the committee said that there are multiple bills with bi-partisan support that would allow Congress to remove the special prosecutor - and that at least one of them is retroactive to the day that Mueller was appointed.
When even Diane Feinstein agrees that these gag orders are unconstitutional, you know that it’s BLATANT!