I think that now Johnson is no longer an electoral asset at any level, it is only the deluded that would continue to sponsor him for any future role in public life. Don't get me wrong, the continued factional infighting is very much welcomed as it continues to illuminate how craven and venal this Party has become.
The funniest part of all of this is that those who bet their personal credibility & futures on Johnson are now so exposed. Prime time entertainment
It is a pity that it took trashing the country to get to a point when the country can conclude he was a snake oil salesman after all.