In reply to Offwidth:
It's not about blame, it's about accountability.
As you quite rightly point out on the other post the Board are collectively responsible, but some are more responsible than others by virtue of their position, and the shareholders, in our case the membership, could ask for their dismissal.
In a situation like this it would be normal for the Board Chairman to fall on their sword as ultimately they are the leading representative of the shareholders/membership.