OK so you have personal axe to grind. A lot of your story has a lot of hearsay in it.
The Union do not make the decisions to represent any legal challenges, their Lawyers do after looking at the facts. The Union will go with that decision. As it was a matter between the person and a member of the public I doubt it was something the Union would represent anyway.
As for the FTO's visiting and using Bully boy tactics and scaremongering. I doubt that it was anything like that. The question of bonus, again hearsay and rubbish.
All the people that have had their jobs saved over the years I've been in the Union and the decent wages and conditions hard fought for have been worth every penny of the subs. Local reps and FTO's have been exemplary in their conduct.
As usual Generalisation and condemnation of an entire organisation does not recognise the good that the organisation actually does.