The EU, that is the institutional body of the European Union, has said they could always stop. But the member states, that is the council, one body of the EU, wasn't so sure about it. Legally speaking, it was unclear and while everyone hoped the member states wouldn't reject it, nobody knew that it wasn't a possibility.
The ECJ just has opened the door wide open for the UK to return from this adventure. And nobody could stop them. That is the message. If they change their minds, this thing "never happened" as far as the EU is concerned. Except for the cost and such, but the EU would happily live with the cost than see Britain leave.
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Hmm. We have tabloids, too. I think everyone even here knows BILD. We have a couple more. But it is generally understood that BILD is the paper of the stupid, with more pictures than words. As such, nobody in their sane mind would ever refer to something said in the BILD oder than to spread gossip. Construction workers in Germany have their main intake from BILD (as a representative group, this goes for any blue collar type of people), but they don't blindly believe it. And they do watch public broadcasters and their news program... the German Tagesschau is still considered one of the if not the most trusted daily news source.
Is political discussion dumbed down? Yeah, it is. It globally is, no country is unaffected by the recent rise of the stupid. I'd even go as far as saying it's not that British political talk is specifically dumber than mainland European talk. It's just that... somehow once more Britain is special in that they managed to cultivate the EU as an enemy symbol for everything that was bad. And now Cameron has pressed the wrong button (Hey now, let's see what you can do!) and people have been lied to in a near Goebbel's like fashion. It was/is pure propagandistic brilliance. This Brexit scheme will be compared to Germany's "Total War" speech as one of propaganda's greatest campaigns. And it just goes to show, people can be lied to. And if you're obnoxious enough about it, they'll start believing. Not everyone is as stubborn as we are in outright rejecting Dribble's lack of sanity. Most people just give up... and that's the first step to agreeing, because it's so much simpler to go with the (perceived) stream than against it.