And that's the problem: You would hardly ever hear it in the news if it was anything else but a meteor, not in any part of the world, but especially when it happened in Russia -- they'd never admit to that.
In the age of Youtube, Facebook, and all the other crap...
It couldn't be much else than a meteor. The height of the explosion can be quite easily determined (from the latency of the sonic boom). Knowing the height, it's not so hard to determine the speed from the videos (so one could fairly easily make one's own calculations and estimations to verify the meteor theory even without any instruments, like satellite images of the event, or the cloud that was left behind).
Not anything that humans built are big enough to leave a 400 km long (and pretty thick) smoke (and I guess jet stream) trail with that speed at that height.
Plus the whole thing looks just the same as bigger falling start everyone of us probably have seen (with the explosion at the end). This was only bigger.