MGSV Theory - Diamond Dogs more like... Diamond Masochists?

Okay, so... normally I'm not much of a game theorist. I usually couldn't give a crap about things like this before a game is released, but... I'm admittedly a huge fan of Metal Gear, and as of recent have been following the lore a little more closely in order to appreciate the intricate story more. So, today, I noticed something.

I used the 60FPS MGSV trailer for one of my game design projects which was basically "give us your favorite trailer and explain why.." etc etc. So I've watched it several times today, right?... Well, I was watching it a few minutes ago and noticed something notable about the background graphics and punished snake.

So, you know this scene where "Punished Snake" gives all the imprisoned children (I think they're children? or really short people?...) pieces of diamond. Or glass. Or something like that. They look like little diamonds so I'm going to call them that for now.

Well, right after this short scene, it cuts to a text image with this graphic in the background:

See the little shards inside the skeleton's body...? I have no idea if anyone's noticed this yet, I mean, I guess SOMEONE has but I haven't seen it, but this has to be either a HUGE allegory for "punishment" or I could maybe even go far enough to say it's a LITERAL thing that Punished Snake is causing himself. So... this proves that Punished Snake does in fact feel some regret for his actions, in either a metaphorical or physical way- the children's diamonds could fly out of their hands when they fall down and pierce his skin or something. Either way, this is REALLY COOL. I LOVE this metaphor so much. When I first watched the trailer, I assumed it was like a stupid message or something like, "HEY. DIAMOND DOGS WERE HERE. WE DID THIS," like how Sly Cooper leaves his little symbol in the place of artifacts that he steals.

But no, Oh my god. It means so much more than that. I can't believe how much of a dumbass I am for not noticing this. Punished Snake's name has meaning. Wow, good job self.

So I guess the large chunk of diamond in his head is a symbol of some sort of larger burden of guilt or something. I look forward to seeing the story behind that shard of glass/piece of diamond. Hehe.