Thinking about the NZRU, rather than Foster, they have put themselves in a corner.
It was they that decided to select Foster, knowing full well that he was a potentially toxic choice.
If things had gone well under Foster's tenure, it would have confirmed to the NZRU that their assessment and decision making processes were ok. However, given the majority of ppl (supporters, media, former players) think it has not gone well, that single decision paints the NZRU in a very negative light. It has even united people across provincial biases, which is ways telling.
What's worse for the NZRU is that every non-decision or decision that turns bad from here on in will be seized upon by the public and especially critics, because the trust that was once there has dissipated.
They are in a no win situation here in some ways. The pre-4N review may well turn out to be a positive one for Foster, but the damage his continued stay will do to the NZRU both domestically and internationally will grow regardless. This impacts on the brand and potentially on the demand to see the All Blacks. With where rugby is currently, this could be incredibly dangerous for NZ rugby.
The NZRU are now managing reputational risk. Handled badly, it could have serious consequences for a significant period to come. This is not something they can bury their head in the sand on. It requires transparency, something the NZRU appears to be sorely lacking in.
It may also require Foster to be offered as the sacrificial lamb, because of the NZRU's own poor performance. Any coach that follows Foster would do well to keep a watchful eye on the NZRU.







