Curveball just as Commons makes biggest decision in decades - weakens ability of Government to say to Remainy/Single Mkt MPs that No Deal will be the consequence of voting down the deal - unilateral revocation of A50 possible...
The initial view of the ECJ Advocate General is to reject Brussels legal arguments that revocation would require backing of EU Council - until end of Article 50 process, UK and its Parliament can pull plug on process
.. here’s the full ECJ release on the opinion - the consequence of a case from Scottish parliamentarians referred direct from the top Scottish court - that the UK Government tried to stop at the UK Supreme Court 
net result of this might be that Downing St/whips use it as a stick to try to get Brexiter MPs in to line by focusing on prospect of No Brexit more than No Deal... interesting to see if PM mentions at start of Meaningful Vote debate... full judgement awaits but mainly follow AG
Indeed Solicitor General tells @adamboultonSKY responding to the ECJ says “the issue of no Brexit does arise”... theoretically - suggests they will deploy it to try to warn ERGers to back deal
