You don't think that justice it's owed to the victim?If the victim required a response/representation (which would be odd when someone is appealing punishment) or had some responsibility for handing out the punishments, you'd have a point.
You don't think that the PA owes it to their members to protect them from injury?
By all means if there's an overly harsh penalty the PA should try to correct it. But when a player intentionally injures another member... I think they owe it to that player (and all players) to support a harsh punishment.