Thank you for providing these links. It does clear up the issue about the pixelation because if you go by what appears to be two people - one dressed in black on the shadow side and one dressed in white on the sunny side - they'd have to be giants. I've worked with digital imagery enough to know that pixelation is an issue. I will admit that I thought that these pixelations were persons. It's now obvious that they are not when you see the scale of the catwalks and ladders.

Of note, It doesn't mean there wasn't anybody up there. It just means that these pixelations obviously don't represent anybody who might have been up there.