So as we feared the ECJ has a big role, we cannot unilaterally leave the customs union and may have to stay in for a long time if there is no mutually agreed exit deal. All the government has achieved is the elimination of the Article 50 right to leave we currently enjoy.
Our negotiating power would be dramatically reduced by giving away the money in advance of a deal, and binding ourselves into the customs partnership and law codes of the EU. Remain voters will say being in the EU is better than this, and Leave voters say this is not Brexit. As yesterday in the Commons made clear there is nowhere near a majority for this one sided and damaging Withdrawal Agreement
The Irish backstop treats one part of the UK differently from the rest and is already being used by the SNP against the Union. The huge payments buy us nothing we want and mainly relate to staying in for longer than we wish. Why would the EU bother to agree a good future partnership when they will control us and take our cash without such a deal?
The resignation of 7 more following the 8 who resigned after Chequers must be a record number for a single policy. It makes the defeat of these proposals even more likely as they will all presumably vote against.