I think that in the second picture, his backpack is still on, but behind his hoodie.
Yes... his posture seems to indicate that a backpack is still on.
1) Where are the straps in the close-up photo? I don't see TWO straps or possibly any straps
2) Why does he no longer have a need to support the weight of the backpack in the close-up photo?
3) His posture is seemingly upright in the close-up, as though he's discarded the weight on his back
I wonder if he's praying to Allah in that first photo.. The FBI needs to know about this, pronto!
I agree,he has the backpack on after the bombing.
Much ado about nothing.