I see the part you mean, but I'll put what I think it is in a spoiler so those who don't want to read won't have to.
I have seen a few programs where people have died and this happened. I think it is blood coming out of his ear that has darkened and pooled beneath his head that makes it look shadowy/played with. The blood darkening is something that happens after death, and the shade can determine if a person was still alive when it happened or not. Seeing as how it's dark, it tallies with the coroner's report that it was an instant death and he didn't suffer because if he had been alive even for a few minutes after the fall, the blood in the picture would have been a lot lighter.
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I'll put it under a spoiler so people who don't want to see won't, as I know there are those here who don't like talking about it.
I'm not a doctoBuffyurse, etc., but I have watched endless hours of programs regarding what happens after death, so I have learnt a few things. The simplest explanation is that when you die, your muscles seize, so if your eyes were open when whatever happened, they will stay that way because the nerves from the brain telling them to close have stopped working. Also, it's oogly, but eyeballs dry up really quickly, so they are, for want of a better word, stuck open until someone decides to shut them.
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The footage of him falling is rumoured to be out there as well. I know there are a lot of fakes around, so I have no idea if the genuine one has been gotten hold of; it's only a matter of when rather than if it gets posted, and I really hope it doesn't. The picture of him postmortem is bad enough, but seeing it happen...I think that would be it for some people and I only hope no sicko has sent either to his family.