Re: IDK, I thought the body switch was a side-effect of the link between them - Edit 1
Before modification by DomA at 11/01/2013 06:52:00 PM
Basically, at the end, there were these two tightly bound souls, or minds or essences, one of which was dying, and between them, they had two bodies, one of which was badly wounded and possibly dying, and the other of which was hale and hearty, and so the intact soul/life force/brain that still had reasons to live moved into the more viable body, and the one that wanted to die and maybe pass into oblivion took the body that would let him do that. That's how I took the meaning of Min's viewing of Rand merging with another man, as well as Rand/LTT's perception that Moridin was a part of him/them, and the spillover thoughts.
I don't think they were bonded as such. I think their two threads are entangled and woven together in the Pattern, and the wound in Rand's side from Falme eroded the "coating", Moridin and Rand's threads were touching one another. I always thought what happened in SL was an effect and not the actual cause.
I think the warder bond is a "wannabe" version of that.
Did it make the transmigration possible? Maybe.
Personally I prefer to think Rand interchange his body with Moridin's simply through will, like he did to light the pipe.
He understood as he came out he had a choice: he could die in Rand's body and be reborn, or he could take Moridin's body and live on. He understood he had choices.
The "how" is not terribly important, I guess. It's written so we can pick and choose our favorite answer that works for us and don't piss of off. It seeks to avoid the whole midicholorians syndrom (that one may very well come if Brandon/Harriet bow to pressure and explain her. So far they've said she came from "deep in RJ's notes" and BSan refused to explain her, and has been vague when asked if the Encyclopedia might have more.)