AFAIK, the FAA, like many regulating bodies take everything at face value, making sure they are not getting lied to isn't their jobs.
An audit usually goes like: "I see that you mentioned a change in document X, show me the corresponding test report", "who is responsible for that part?", "does document Y match document X, as required by norm Z?".
They will never check that you actually did the tests, or that the analysis is correct. Only that the paperwork is done correctly and that the person responsible is identified. Their field of expertise is in the process, not software or mechanical engineering.
But now that they have a list of names, and if one of them rubberstamped something that wasn't actually done, things won't go well for him. It can get really serious, possibly resulting in prison time, so managers usually don't that this duty lightly.