It's simple really
It is ILLEGAL to intimidate employees who wish to form a union
It is ILLEGAL to fire people for talking about wanting to join a union
Ryanair management are intimidating you into not signing up for union recognition because they do not wish to negotiate - they prefer to impose their will on their employees.
Such practices were made illegal after WW2 by the first Labour Government.
Management CANNOT just dismiss employees for joining a union. BALPA would fight such dismissal for very expensive employee compensation.
IF you are unionised you always have ultimate power - YOU CAN STRIKE, YOU CAN GROUND THE AIRLINE, Doing this is agony to management, shareholders and the bullies like O'Leary. That of course is what he is frightened of.
Wake up and realise why you must be strong, where would we be be if in the Battle of Britain pilots had said 'Oh I don't want to go up flying today in case somebody takes a shot at me' - Living under the Nazis is where we'd be...
If you believe in democracy rather than martial law you need a union. Sure BALPA isn't perfect, but it's what we've got and it's the only thing that protects those of us who work in other airlines from the kind of abominable and borderline illegal practices that your management exhibit.
Incidentally why oh why isn't somebody talking to the press about this employee intimidation - after all the company has put its threats in writing and they are ILLEGAL!!
Desk-pilot