I think Sunak might have played a blinder here.
He had to do a deal with Braverman, a pact with the devil. But he is actually the devil here, and he gave her what she wanted - Home Secretary - knowing full well she is about to be the architect of her own destruction.
And he’s got rid of her. (Or he soon will have.)
And his hands are clean. Not his fault - the devil kept his part of bargain.
And she can’t come back again.