Yes I have studied all the news and vids. I cannot get on that train that the FBI put out phony pictures and asked the public to identify him in over 6000 electronic billboards.
IMO the shadow question has been answered by the many explanations of the errors in compression and pixelation FOR ME, along with the gun, the hairy hat hood, the puppy, cattle prod, sword, knee braces, exhibitionism, erasures and all other ponderings.
When I look at the pictures from the originals released I see that the angles indicate the shadow falling along the gap between the RR ties.
FWIW When replying please use the "Reply With Quote" option so that others know what you're talking about. It makes the thread more sensible. TXS
JMO