“Do you think he committed a crime? What law, if any did he break?”
Yes, conspiracy and obstruction of the Grand Jury subpoena. Which was idiotic, because the actual possession of documents was either legal, or trivial. This was a nothing case, that would have helped him, until he went rogue on his lawyers and started hiding documents.
You have to understand, even if you think he declassified the documents, and had the right to take them, once they were subpoenaed, he had to give them to the Grand Jury.
What crime was the grand jury investigating?
If the documents were classified, then every member of the Grand Jury would have to have a security clearance to see them. Did they have that?