This smacks of the partei either learning for the first time, or realising everyone else that read it now knows, of the "Fraud" as described in the book and wanting to cut out a convenient scapegoat in the form of McSweeny.

https://www.theguardian.com/politics/2025/nov/12/presssure-grows-on-starmer-to-sack-chief-of-staff-over-briefing-row

Keir Starmer is coming under intense pressure from a wide range of ministers and MPs to sack his chief of staff, Morgan McSweeney, after No 10 was accused of an extraordinary briefing operation against the health secretary, Wes Streeting.

Starmer is understood to have told MPs he will not sack his chief of staff and would not respond to several demands to ensure there were “consequences” for the briefers.

Astounded Labour MPs and ministers have blamed Starmer’s most senior aide for the fallout from an apparently orchestrated plan to fire a warning shot at putative leadership contenders including Streeting.

etc.