Well an asteroid not possible.. a meteoroid; increased possibility. But judging on the size of the contrail (and that is what it is no matter what ever is causing it because of its speed) I think it is very unlikely since you would expect it to slow down and reduce the contrail size when moving through the atmosphere. And if it was to move away (not dropping to the ground) so to speak would suggest a high enough speed (and hence energy) that can stay vertical in plane of entry which again makes it unlikely, but of course it makes it harder to judge speed, surely. But that it would have anything to do with the Ural meteor is non-sense, especially considering the argument of a lower entry speed.