I am 100% convinced that his report will contradict the NFL's findings, at which point the media start smelling blood, and will demand all relevant documents to be made public, to settle the issue. If the NFL won't comply, that in itself will be a huge blow to Goodell, and the NFL. There will be nothing, but one thing to deduct from their refusal.....they don't have anything to make their case.
I think Goodell is entering the final phrase of his tenure as the NFL commish.