I believe the likes of Jolyon Maugham are hoping that a court would rule that Art50 can be reversed once invoked. They would then attempt to talk down the UK economy for the next 18mths to a point where they believe they a call for a 2nd referendum would be welcomed by a majority. They, in my opinion, incorrectly believe that leavers would eventually grow tired of the ‘leaving the EU’ dragging on and would pretty much accept staying in the EU. We have seen this EU game of wearing down the opponent achieve previous success in Ireland, Holland, Greece etc. I don’t believe it will work in the UK.