Brexit is going to ultimately get cancelled if May loses tonight, isn’t it?

[Burney]

The only genuine fears about the backstop are that it would reduce our negotiating leverage. No-one *actually* believes there's a remote chance of us actually ending up trapped in it - it's all just bluster.

If this were not the case, you would be right to think the DUP won't budge. But it is.

m, I love you dearly and enjoy our chats. You’re a very bright chap generally, but sometimes I do wonder about the way you get ideas stuck in your head.
The WHOLE POINT of the backstop is to keep us trapped in it unless we accept a permanent customs union (ie de facto EU membership).
Someone today likened it to getting into a car with someone who has a gun in the glovebox. You ask them to get rid of the gun, they say ‘Don’t worry about the gun - I’ll never use it’
‘So why do you need the gun?’
‘Never mind the gun. Let’s just get where we’re going’
‘Where are we going?’
‘Wherever I say’
‘Can I get out, please?’
‘No. I have a gun’