Legal matters can be quite tricky. The judge enforces the law, and as such he is a 10th house figure (representing the government), but the jury decides many cases and the judge rules only on the sentence. Anthony Louis and Lee Lehman give the jury to the 11th house, because they are advisors (second from the 10th) to the judge - that is, they determine guilt and the judge sentences the defendant on the basis of the jury's decision. A bench case is one in which the judge is the deciding party (no jury is involved), and then he is the determining factor. The Moon (significator of the public) is sometimes assigned a role as coruler of the jury.
Edited to add: This thread calls to my mind a complicated horary chart for a client facing a jury trial. The judge was not favorably inclined toward the defendant (my horary client), and would most likely have thrown the book at him - but the jury (11th house) were sympathetic overall, and determined that my client was guilty only of one of the lesser offenses. The judge delivered the harshest of penalties permissible within the parameters of the lesser offense. One of the jurors stated after the trial that he believed my client had had ineffective assistance of counsel, and indeed the relationship between the defendant (1st house) and his attorney (2nd house) was not a happy one. There was a great deal going on with such factors as reception and retrogradation, too. As in health matters, legal issues can vary from cut-and-dry to incredibly tangled. And much depends on the particular legal system and jurisdictions involved, which vary considerably from country-to-country.