After being widely lambasted for its heavy-handed and ethically ambiguous (challenged?) BitTorrent litigation tactics over the past few years, an incarnation of the infamous Prenda law firm was recently hit with a piercing the corporate veil judgment by a Minnesota state court. In Guava, LLC v. Merkel, 2015 WL 4877851 (Minn. 2015), the plaintiff pornographic film producer, represented …