I should like to propose a positive possibility.
This FO was found to be innocent of the accusation and at such a level that the words "smelt of alcohol" could not be true.
If the cabin crew now accused in Manchester also turn out to be innocent of the accusation - then the Police are going to have to think very carefully. Two cases close to each other if they both prove to be innocent will force the carriers to look askance at any casual comment.
Is that hoping against hope? Well, BALPA ought to be able to make that point for you and I don't imagine that BA and VS are very happy about the cost to them of these events. If people are playing games - two events close to each other, could be what is needed to change the game.