He’s manifestly angling to still defeat his party opponents and remain as their leader.
I think this is what he’s attempting(in his head) short term but i’d be surprised if plan B isn’t to establish a new party closer to the election if he can’t over throw his opponents and remain PM within the Tory party
The problem with the tories chucking him out is that it plays to the ‘will of people’ narrative used by him to gain him the premiership.
If they’d have called an election(0% chance)rather than letting a small number of people decide the next pm then the ‘will of the people’ would not be so effective.
I don’t think BJ’s particularly worried about the Tory party they are just another thing to f*** over on his journey in life doing what he wants.
Even if his new party fails he will pocket the membership fees and carry on living his life on expenses.