I believe the image in the video is reversed; the high-res photo posted earlier that we have zoomed in on white-hat guy shows a bad left arm.
Except that the runners are running from west to east and the two suspects are walking in the same direction as the runners, and the logo on the Bridgestone hat of Suspect #1 is not reversed. So I don't think the video is reversed.
the high-res photo posted earlier that we have zoomed in on white-hat guy shows a bad left arm.
That's a still photo and all we can see is his hand. Also, the Saudi with the bad arm is of medium height compared to the group of people he is in, and for example is clearly a few inches taller than the Saudi student whom Obama wanted to deport. The white-hat guy Suspect #2 looks like a shorter guy. I concede this last point is somewhat stretched, since we don't have something with which to directly compare their heights.
Looking further at the video, I matched it up with Google streetview.
The two suspects coming south on Gloucester turned left onto Boylston where they walked east, in the same direction as the runners, and were captured on the time stamp of the video at about 2:38 p.m. That's a block and a half from the second blast site and two blocks and a half from the first blast site. So clearly the video was not reversed.
Since the bombs detonated at 2:47 p.m. those two did NOT dawdle anywhere. They walked straight to their target spots, deposited their bags and then at least Suspect #2 the white-hat guy returned the way he came but turned north one block short (on Fairfield) of the way they came, as it appears from the high-res photo.