I'm no political expert, so maybe what i'm about to say doesn't make sense, but here is where I feel this speaker thing should go :
1. McCarthy should reach out to the democrats.
2. Democrats should fleece him for huge concessions in exchange for taking all his far-right concessions to the "20" off the table
3. Accept democrat demands.
4. Have 20 dems vote for McCrthy.

Obviously, the democrats as a whole would have to approve this strategy but it seems like the best way out of this shitshow.