Riddle me this.
1. It's clear that Brady never had any intention of turning over his private phone (or emails, or voice messages...). As a member of the NLPA he needed to draw a line and not set precedent for future players.
2. The NFL PR machine will keep stating that he was allowed to personally vet all messages and only turn over those that related to their investigation. That's irrelevant, given item (1) above.
3. If he wanted to look like he was cooperating (rather than upholding players' rights), he could have handed over to them 1,000 messages that were exculpatory.
4. He had no intention of setting even that precedent. He also knew that if he handed over 1,000 - the NFL would just say there were 5,000 more that confirmed his guilt.