I do understand why some people think posting the reported comments were unfair. As others have said I wanted to clear up the perception that the reporters of the posts in question were malicious and/or motivated by a specific agenda and therefore might be likely to use the breached data maliciously - they weren't, they were genuine Mumsnet users who were trying to be helpful and we'd repeatedly reassured Simbaya on this matter.
Furthermore Simbaya had posted these comments under their username on the forum - so I don't believe I was outing them by repeating them.
Obviously correspondence has gone on/was going on behind the scenes which I'm not going to share here but we have good reason to believe this user wasn't acting in good faith, so in my view our priority is to the people viewing this thread and clearing up things that could cause alarm. (Who you choose to believe is of course, your choice.)
None of that of course is anyway mitigates the fact we should not have breached anyone's details on monday pm and that we have a duty to protect all users' data. As said we're extremely sorry about - especially to the 20 or so folks who's emails were leaked - and we're taking the matter extremely seriously internally.