A post verdict mistrial may be granted for only a portion of the jury's verdict, and a final judgment entered for the rest of verdict, if the reason for the mistrial does not require a mistrial as to the entire case.
Your ignorance of that fact does not make me wrong, much less stupid.
Could the decision to enter a final judgment on some counts, and retry Trump in a few weeks on the other counts, be challenged? Sure. But until Trump got a higher Court in New York, or a Federal Court, to stop it, he would still be under the gag order, and compelled to appear in court whenever the trial judge wants.
It is stupid to act like any of the machinations of a kangaroo court have any basis in fact or precedence.