UCO officials were the last hope for prosecution against the state attorney general, and their disappointment must have been immense. If someone was expecting testimony from him, they wouldn’t know about the private security. It is clearly criminally irrelevant for Álvaro García Ortiz to testify that he exercised his authority to collect information that could refute the rumors spread from the Madrid community. The only thing missing would be that he didn’t exercise it when he was the most responsible person in the hierarchy.
The investigator’s assumptions about what the prosecutor didn’t know, or knew before receiving the mail, border on psychological theory. The literal nature of the information released as evidence would sound like a joke if everyone had the same email.