Grammar Cop: Will They Except Cache?

Complaint: Misdemeanor misuse of a homophone – “principle” when “principal” was called for; transfer of error on to a vinyl banner; mounting banner in a window with significant vehicular and pedestrian exposure.
Defendant: City Connections Realty, Inc.
Report: Officer noticed transgression on Park Ave. while passing another former restaurant that he had meant to go to. Apparently he waited too long. Before a ticket was issued, he was briefly amused by the idea of a broker with principles.
Fine: $105