Some thoughts i'd like to add.
Kellhus and the Dunyain in general thing themselves as places when they are meditating. There are examples of that in the first trilogy. When young Kellhus was first conditioned by the Pragma in order to control the legion within, he was referring to himself as a place. He was doing the same think before entering a probability trance. As far as the Logos is concerned, a place, unlike a person, is impartial. But according to the metaphysics of Earwa, a person is a place where the outside is looking in.
The interesting thing about the metaphysical part is that time in the outside is perceived all at once. So what happens with Saubon makes perfect sense. Saubon dies, he is turned inside out (his inside, his soul goes to the outside). The POM are a topos and thus partially in the outside as well. So Saubon, being now in the outside, has access to all time (as perceived by the God of Gods) and thus access to the time when he was at the POM.
The difference in time perception between the outside and the inside (physical word) is one of the if not the most important factor that shapes the metaphysics of Earwa. It even explains how divine judgement can be shaped by belief without actually changing at all.
