Re-assign blame?????
That is the difference between technical /scientific people and managers/executives.
In the past it was considered ok to just "sack the wrongdoers" and pretend the problem was fixed. (the blame game.) Some still want to continue this. That is half doing the job. (shifting blame)
I once went to a breakfast meeting where Professor James Reason spoke at length about these things. (the only time I got a free feed from CASA) Professor Reason emphatically made the point that the blame game was usually a diversion from the real purpose of preventing such things from happening again.
Sure you have to find who did it wrong (if they did) but sacking them will not usually solve the problem. You have to then find out why, and the trail may lead to many places. They all must be fixed.
An example is the airliner that crashed and killed many people because the cargo door was not properly closed. The person who closed the door could not read english. And the door instructions were in english.