The explanation in the letter from Tim Burke is
"The omission of this information from the original version was a reporting failure. It arose because the relevant material heard in court was not incorporated into the first published version of the story, which was written from a police press release and a court check. Once that became clear, after an unacceptable delay, the article was corrected and expanded."
I would read that as saying, in effect, "trans ally saw notes from court, realised that they showed that a nasty bit of work was trans, and quietly failed to use them". It was the people at HQ rather than the reporters in court who were sucking up to the trans, going by that.