We explored the shadow coming from above here in the last edition of this topic and we found that if you're not on the landing and around 5.9' it will not touch you.
Also if you believe that it is real shadow on BL then keep an eye out for an image taken i the next 3hrs that shows anyone in the same position being hit by anything similar, I posted the only one I could find and I'm not even certain that the thin dark patch on the young man's back is indeed shadow. Until I see proof I'll remain doubtful for now and of course it looks like shadow but Ray has really surprised me by saying it's coming from the west wall/pillar, how does work with all the aftermath images of the thin shadow on the steps and with Andej's model and like I say no evidence there on people in later images?