In no part of the super-8 footage does it look to break apart. Every other body I've seen move that hot and that fast has. Add to that the resonant return it was supposed to make, and it makes me think of a von Neumann probe doing a Leonov type aerobrake a la 2010.
That or a really big asteroid that entered the atmosphere at high speed, skipped back out of the atmosphere without burning up and was never seen again.
I don't think it was that big.
Hey it probably was just a nickel iron slug of an asteroid, explaining why it held together so well even in atmo for 1,500 km--but one can always hope. To me, the scenario I suggested above is more realistic than the idea of a UFO looking like something out of a Discothèque with lights all over. That never made any sense.
Now I do like to play with modern myths--to try to make them workable. Were the Kecksberg acorn real, I would say, for example, that it was a "Nazi Bell" that was launched by a Soviet sounding rocket to get it away from terrain that it might slam into wobbling around. High in the sky, it could dart along field lines 20 miles to any direction and not hit the structure it was supposed to be chained too. If you had to cut the power, you have a heat shield and a parachute to get it down. If Earth's rotation was not factored into, it falls in the new world.
Now I don't really believe that--but it is a fun exercise.