Obviously as additional details were revealed, NTSB acted promptly and appropriately.
Quite so. I suspect that any (alleged) NTSB indecision lasted only as long as the aircraft's progression, showering sparks, along the runway.
As soon as it became clear (from the liberated nosewheel) that we weren't looking at a simple NLG hangup, the Go-Team's phones would have been ringing.