Two questions to start with:
- Are the 1922 Committee's rules essentially plastic? - as seems to be the case
- Is there anyone in the parliamentary Conservative Party who could form a government right now? (OK, you might say: someone already has. Alright - anyone else?)
If there is such a person, there's a solution. Make Truss accept that her role as 'elected leader of the Party' is essentially a glorified Party Chairman position. She may continue to open garden parties and speak to an empty hall at Conference. Then, have the parliamentary party lock themselves into a room, anoint whomever it is, and get word to the King that he should invite this person to form a government, having the support of an absolute majority in the House. Oh dear, oh dear - back again, Ms Truss? What's that you say? Oh, very well.
PS: if the answer to 2 is 'nope', then there's no hope. Starmer it is.