It can't blow over in the UK or the EU, because it is seriously f-ing illegal in those places.
Yes, we "knew" it was happening before this (hence all the regulatory steps taken that were dismissed as anti-American protectionism), but we were lacking hard evidence, so all we could do was reinforce regulations and regulatory authorities.
Now that shit has leaked, it's simply not an option for those authorities to not act. Not to mention the fact that they really, really want to act.
So no, this will not blow over. Maybe in the US and/or the media, but not where it matters.