I tend to agree with you that this report probably wouldn't have changed THAT jurys mind.
However, it is unconscionable that every single keystroke from June 16th was not thoroughly investigated. When I first heard about this I was speechless. I just couldn't believe it. (Heck, at least June 16th...I would have gone back much further myself.) Info as vital and incriminating as this could have altered the way the prosecution chose to present it's case - they may have shifted the focus a bit.
That said, I guarantee you that NO ONE is kicking themselves harder today than OSCO and LDB & JA. NO ONE. I feel for them, especially the prosecutors. It sounds to me like LDB & JA thought this had been done. As for the OSCO, well mistakes and oversights happen. Such is life. Like it or not, we all can identify when we have screwed up big time too. This should not have happened, but it did. They are human. This is a lesson in how not to screw up so badly next time. Unfortunately, it is a very costly, public lesson.