Can you imagine a US state doing that? I don't think unions are reversible at this state in history. The national state is not exactly living a revival. This is majorly a financial crisis.
> This has left our national governments with a nice scapegoat, great for populists, nationalists and fringe politicians to use for their purposes
That is a very good observation. It's the reason Greece is suffering at the moment. But leaving the EU at this point would be even worse.