In all their
(In all their...) is a Computing Team in-joke, originating from the early-2000s "URY International News Headquarters (European Branch) Provision of Information Resources cupboard" cooling documentation.
The document[1] is a comprehensive user manual for the cooling apparatus installed into the then-server-cupboard. Whilst these days we refer to the location as The Hub, since our servers are now in Stores, the cooling system is still somewhat in place (with the exception of Estates completely replacing it in Summer 2013). The documentation is, to this day, completely valid, making it the longest-standing single piece of documentation that is still accurate to this day.
The full guide include a full rationale of the system, during which whenever the Computing Team (in all their wisdom) are mentioned, the phrase "in all their wisdom" is added in parentheses. Likewise with the (then Technical) Engineering Team (in all their glory), News Team (in all their usefulness) and Speech Team (in all their... erm... something... not sure what... ask Leo). Oh, and apprehension (whoever she was).