If the pilots were not to blame, good management will not penalize them. If they were to blame, they should be penalized/terminated. The only reason for a union is if management is bad, which I suspect is not the case at Flex. And we all know unions protect the worst pilots among us.
A retired NTSB accident investigator taught me years ago
-If you are ever involved in an accident or incident every organization involved will use everything they can discover to blame the crew. The monetary stakes are very high.
-The manufacturer will never admit their AC is faulty
-The company will never admit their training or maintenence was inadequate
-The FAA will never admit their oversight or requirements were inadequate
-The airport operator will never admit they lied about the runway conditions - FICONS (MKE has been caught doing that - repeatedly)
Every organization with a finacial stake in the findings will want to blame the pilots and wash their hands of it - including the company the pilots work for. When a NTSB investigator tells you the only friend you will have is your union - you might want to listen. In the many years since he told me that I have witnessed it first hand several times.