Unions helping management to take down a competitor!!! Plausible theory but with so much bad blood between EU unions and airlines, they being bed fellows, highly unlikely.
We know that ME3 have long reach and able restrict freedom of speech in the west and on the internet, we also know governments cannot help in current situation, so IMHO a union like VC is best suited to help or at least to gather information and get the big picture.
All world has right now is lot of rumors, actively being discounted by well funded overactive
PR.