Still makes me gulp, that May is probably going to lose because of her own MPs. PA predicting a loss by 160. What then? Corbyn proposes a MONC which will fail, so no election.
And they can't challenge May internally again officially for 11 months. That said it could see a parade of cabinet ministers turning up to tell her to go, as happened to Thatcher. Even then if not May, so what? Hold the vote again until it passes out of boredom, suspend article 50, get an extension to article 50 (which needs agreement from the EU), vote for election, vote for referendum, (and both of those are predicated on an extension), or fall out with no deal. May being in charge makes no real difference.
I think an extension of Article 50 is the most likely. It gives some hope to almost all sides apart from those who want No Deal, and I don't think that's anywhere near in numbers to succeed. In addition, I think that the EU will agree since they don't want no deal either, though I wonder if some nations might see it as an opportunity for some horse trading for them.