I'm not sure the conclusion to Brexit matters all that much to my point no. Even if we go down the no deal path Dom and his cronies would likely go.
Boris is going to try and put Brexit behind him and rebrand next year like he failed to do this year. There's this huge narrative that's formed around Cummings and it necessitates he goes. By all accounts Cummings didn't want to stay on this long anyway.
A public spat that projects Boris as not under the thumb of Cummings is the best way to break that unhelpful alliance. I thought it would have been Barnard castle but egos got in the way.
Really interesting. You obviously have a good grasp on the goings on in Westminster.