Yeah, that's not happening.
Everybody and their mothers realize that this smidgen of refugees Turkey let out is just a PR stunt by Erdogan for both home audience and some in EU.
EU won't be sanctioning anyone, simply because Turkey is having all the real cards here. If Turkey lets even quarter of refugees they host go forward to Europe, it will be a crisis of whole other magnitude, than this.
What is much more likely is that EU will cave and pay.