This bird was traveling through that airspace at altitude, whereas most in that airspace are domestic and taking off and landing to the east of this event. Facing west from the nearest airport will eliminate most if not all contrails from domesctic travel.
We do have flight data from several possibles, especially an US Airways Flt 808 and a UPS bird flying a similar track. I am certain there is an ATC track with the proper Mode 3/C data. FAA may or may not provide it on request.
There was a very wet front moving in, so there was more than just the disturbance from the jet engines occuring. The whole jet was roiling the air, so you wouldn’t be able to pick out just the engines. It happens on occasion.
As far as it being an old Luftwaffe V-1, all I can say is it is highly unlikely.
I think there is a huge security hole here no matter what the object was.
If LAX or the Pentagon cannot immediately identify something moving at subsonic velocity, Houston we have a problem...
Arguing about what it is doesn’t solve this.
It is impossible to exactly correlate any known flight path to an unknown flight path.