Interesting point is that IF (it probably won't) the case get to court, the fact that he 'resigned' on National TV, without accusing the team or NFL of any wrongdoing might come back to bite him down the road. If he was forced out, he should of let the team fire him for 'cause'.
I'd love to be one of the dozens of lawyers that will lining up to depose (at least) the Commish and the Raiders' boy owner and probably Grudens buddy GM Mayock about any conversations during the weeks preceding the leak and the day in court when Gruden's lawyers ask for the 650,000 emails and access to all the current NFL's and team servers for the emails/texts to do with discussions about Gruden as part of 'Discovery' --
And in a commentary that is OT: this may become as interesting as Trump's loyal team vs the 1 vote Democratic controlled House and their 'subcommittee'. Will they all go to jail for him? Will the Supreme Court get involved -- This is so similar in many ways to Nixon back in the day.