If Serino was confident enough that GZ was guilty of a crime that he signed an affidavit, why hadn't he arrested GZ already? Surely he could have at that point, right? If true, to me that tends to support the belief that Serino didn't actually think GZ committed a crime. That would support that he only filed because he was under pressure to do so. I know it's generally accepted (around here) that he did so under pressure and wanting to pass the buck to SAO, but it proves to me at least that he believed GZ acted in self-defense. I wonder if he was asked in his deposition why he didn't arrest GZ.