First of all, the 'flash' is offset from the the pole, which clearly suggests that it did not, in fact, hit the pole or is related to it in any way other than coincidence.
Secondly, the 'trail' looks to be very straight, but slightly widening farther from the 'flash' end, suggesting perhaps a shadow rather than a trail of some sort - although perspective might account for this....
...especially since the only explaination that I might be able to come up with for the indistinct white blur is that of some kind of circular-plate-shaped phenomenon, viewed at an extreme perspective angle. This has the same look as a compression wave, like you'd see on footage of bombs exploding (watch a Vietnam documentary and you'll see what I am talking about.)
Finally, and perhaps MOST importantly (what is probably the only truly significant item
![Smile :)](./images/smilies/icon_smile.gif)
Well? Bunk?