The posted video shows plume movement and a flame. You and I had this discussion earlier today: I see it, you see something else.
No matter, FReepers can look at the video and make up their own minds.
On the second point: if this was a booster cook-off or some other misfire then the filing requirements go out of the window. It would also explain why the Navy aren’t claiming it as one of theirs. Seems plausible.
Ok, bedtime. Good night from this side of the pond.
As would it not being a rocket.