I was involved in the an incident like this, and the intense pressure for public immediate action led to the (firing or resignation) of multiple people who were actually needed for the investigation.

Something that could have been fully analyzed with those people in a couple weeks ending up taking two years with an independent outside auditor.

The independent auditor would have been needed either way, but if we gave the original crew the opportunity to respond, THEN fired them, the outside auditor could have just verified the story much more quickly.