Basically, they've left the door open for us to vote in a pro-EU party in the next general election and abandon the whole thing. That's why they won't agree a trade deal in the next 2 years.
They're hoping, like me, that things will get sufficiently bad in the next 2 years the public gives a mandate to a pro-EU party, and the whole sorry mess can be averted, and then we can try Johnson, Farage and the other scumbag liars for treason.
[1] https://www.theguardian.com/politics/2017/mar/29/first-eu-re...