I would have to say in my short lived experience, that there is
ALOT of junk / meteors coming in at any point in time.
Although I do agree this is a one in a million shot, it is more than possible given the showering we constantly receive.
Check this shot, 3 frames of 30secs. Two burnup's captured... This goes on all the time everywhere. Only a matter of time till someone captures some good shots...
Could well be an error etc. I hope it is not though...