First off... Oh my God, what have you done, Tri-Enforcer!

So you read jhurvid's initial post, and maybe one or two more, but you didn't read on to how we have already disproven what he said? Now we have a huge mess here... I didn't even read the 5 latest posts, as everything has been said before.
Anyway, some one things are open:
Ah it now makes sense, if time was correcting itself to adapt to this new timline's presence, except why hasn't Zelda got the Triforce of Wisdom in the OoT ending as well?
This is simply not answerable. All we know is that Young Zelda doesn't have her ToW in the Child ending, although we would suppose her to have. We have to take this for canon, without understanding *why* it is as it is.
So him going to Termina in the Child timeline causes the Triforce to split in the Adult timeline? (the one he took out of the Adult line with him, no less) What?
I'm severely confused.
No, Link going back to the past causes the ToC in the Adult timeline to leave his body. What happens to the ToC afterwards, and how it ends up split into shards in time for TWW's events, we don't know yet. Maybe Adult Zelda did it, but we will have to wait for TP to depict it.
Jumbie, you seem to be using the "Shinentai" trend to argue that Link's soul can exist in both timelines
Not knowingly..
It doesn't disintegrate. It becomes interdimensionally misplaced. If his soul WAS split, then both Links would be emotionless zombies or something.
With the word "disintegrate" I referred solely to his Adult
body, if you remember, not to the soul. As for the soul, I simply didn't know what to with it, which is the reason why I mentioned your name inside all that rubbish.

Perhaps when Zelda sent back Link's soul, the Adult Link body wasn't disintegrated, but returned to the soul of the Link that properly lives in that body.
I don't really care where the body is brought to, fact is it vanishes from the Adult timeline. My theory was, as said long ago, just a crappy attempt to explain it since no one else tried. Now you have done so, so congrats.
Either way, Link's soul does not split, or he would have some severe mental and emotional issues.
Now I only need to know where TP Link gets his soul from, if it's not the one of Adult OoT Link reincarnated?
Isn't there a hypothesis that Termina is meant to represent a land of the dead? That would explain the Triforce images appearing there, as well as everyone's inability to take the Triforce there.
I've never heard of this, and I don't find it very plausible..
Now, don’t anyone say, ‘Link was separated from the elements. That’s why we don’t see the mark on Link while he’s in Termina.’ Before any of you say that—MM didn’t start in Termina—the game started off in Hyrule! During the brief time Link is shown in Hyrule—he displays no mark.
Too bad, I've already said that in my very first post in this thread

The mark simply isn't seen in MM's Lost Woods because.. because.. ask the developers.
AoL Link doesn’t have any Triforce part to himself at that point of the story at least.
Well, only the ToW that he collected during the events of LoZ, and the ToP that he took from Ganon in the end of LoZ, but other than that, he has no Triforce pieces prior to AoL.
It’s safe to assume that all the marks shown in the Zelda series are pretty much intended to be the same.
Wrong. Again, read the whole topic and you'll find where I said that there exist two different Triforce marks in the Zelda series.
(Ricky) Of course it was taken by Ganondorf! Link returned to the Child timeline with Ganondorf sealed in the Sacred Realm, so Ganondorf has got his ToP and Link his ToC.
This is actually me you quoted there. And I still stand to my point that Zelda doesn't have the ToW in the Child ending for an inexplicable reason.