If MLB really has a lot of evidence that this actually happened, I would hope that would have been turned over to be used in court proceedings. If it was, and it still wasn't enough for prosecutors to even bring charges, then it's bizarre to me that MLB would still suspend for 324 games. If the evidence was not handed over, then that's an awfully scummy move by MLB, and Manfred should be ashamed of himself (unless MLB is restricted by the MLBPA, in which case the MLBPA should be ashamed of itself).
I also read in an article this morning that when this policy was put in place, the players waived their right to appeal, so unless that's inaccurate, this ban will stand.
I am very much not a fan of Trevor Bauer as an individual, and think he's overrated as a player, but this is indefensible. It is ridiculous that MLB is punishing Bauer for, legally, no reason whatsoever.