This letter thing, doesn't it make you think ERG are worried Brexit may not happen if May is still in charge but on the other hand you have remainers trying to boot her out too. I'm confused, what's the game?
Go For Broke (Brexit Edition).
The EU knows there's no way to give her anything but a comestic gesture. Unfortunately, she knows it too and all this running around is just stalling and timewasting, that we're paying for, literally and figuratively.