As the ramification of the Epstein Files' revelations about the actions of Peter Mandelson continue to dominate the news, I think we can safely say that Keir Starmer will seek to inoculate himself from criticism of his decsion to send Mandy to Washington (as Ambassador) by throwing Morgan McSweeney to the wolves.
As Mr McSweeney will know political loyalty has a remarkably short half-life in times like these.