The Article 50 treaty says very clearly that unilateral revocation isn't possible. The ECJ has done what's expected for the EU and simply ripped it up, but will the other heads of state accept the treaty they all signed just being voided like that?
Probably yes - ultimately what happens in the EU is always and everywhere about politics. Written law hardly matters.
You are incorrect. The ECJ confirmed on 10 Dec 2018 that unilateral revocation is possible. Indeed the exact title of the press release from the ECJ after the judgement was "The United Kingdom is free to revoke unilaterally the notification of its intention to withdraw from the EU".
How is what I'm saying incorrect? You're agreeing with me that the ECJ voided the treaty. Here's what Article 50 says:
3. The Treaties shall cease to apply to the State in question from the date of entry into force of the withdrawal agreement or, failing that, two years after the notification referred to in paragraph 2, unless the European Council, in agreement with the Member State concerned, unanimously decides to extend this period.
The treaties cease to apply two years after the notification date unless the Council decides unanimously to extend.
The ECJ read this and said, nope, unanimous consent not required actually, the country can simply revoke it (i.e. extend indefinitely) at any time.
Probably yes - ultimately what happens in the EU is always and everywhere about politics. Written law hardly matters.