If, as is possible, there have been internal staff personality clashes in any institution, then "reasons of confidentiality" doesn't necessarily mean that the institution isn't being open and honest. Dealing with people is certainly not a game of cards, but preserving people's right to privacy in internal personal matters - for their own sakes - is important.

If, for example (and who knows), there have been difficult internal politics at a personal level, then the inevitable complications of all of that may not be suitable for airing in public.

There's still no official statement from anyone regarding this affair, so all of this thread is speculation.