Vixen
Penultimate Amazing
Imagine for a moment that it isn't "very obvious". Can you explain why it had to be so? Was it somehow impossible that he could survive the humiliation of have been seen to have repeated early reports which later turned out to be incorrect?
You appear to be inviting us to infer that after he said the bow visor had failed, if that turned out to be mistaken the evidence would have to be faked to make it seem true. Well, why?
I believe he decided to label the cause of the accident 'classified' which is why he put out disinformation from Day1 before anyone could possibly know for sure what had caused the accident. Even if the bow visor did fall off, that would not necessarily be the cause of the accident, but to a serious investigator could just as well been incidental or even coincidental to the real cause or causes.