A couple of sounded like attorneys, over on CTH, I believe it was, say that FLYNN’s withdrawal of his Guilty Plea, opens the door for the FBI to go back to that point in time of the so called “Lie” and from that moment may resume harassing FLYNN.
This creates some degree of new legal jeopardy, according to the comment, for General Flynn.
Then there is the Q Time Clock to consider for when things fall into place. “FLYNN is safe.”
Yes, more or less the same thing as 'keep his family from legal jeopardy.' Mueller would have done well under Stalin - until Papa Joe started worrying about him.