I do wonder sometimes if people can't just be a little empathetic...
I was once in a rock or hard place decision at work - I was 'new' to the post but I certainly was not inexperienced or incompetent but being 'new' and the banding that I was I didn't have certain 'priviledges' I needed to prevent a huge issue happening.
In the end I made the ONLY decision I could make to keep people safe but that had implications, which I was hauled over the coals for... Despite having saved them a LOT of money and crucially kept people safe.
I think MNHQ need to be a little careful here - if I am wrong and Julie had full administrator rights to this board last night AND an escalation procedure AND a senior to contact and failed to do ALL of that then she is clearly needs further training and support.
However if MNHQ left Julie in charge with half the privileges in place, no senior in place and no escalation plans then quite frankly the people above Julie should be squirming uncomfortably and not deflecting it down to her. It is those people who are at fault and the lack of procedure not Julie and they owe Julie an apology.
If Julie was left in that second scenario (the fact she couldn't even shut down the board effectively says it is) she did RIGHT to shut down the board as some of the threads were, jokey or not controvened the Equality Act and therefore illegal and Julie as admin accountable. I imagine she was being absolutely bombarded with reports and inflammatory posts to be removed.
I felt sorry for Julie last night. I hope MMHQ look at their procedures so to protect and support their staff better