Another European Referendum

The disarray of the Tory government over Theresa May's Brexit deal seems to have pretty much killed it.  I would think that there is little prospect of a General Election since, despite their lead in the polls, there is too much chance of the Tories losing.  That means that the only way out is the increasingly popular one of another European referendum which requires an extension of the Article 50 period.  Humiliating as that would be for Theresa May, it seems to be the last option left.