expanded out of body(split awareness) and soul spoke to someone through me

[Aion]

This type of experience is actually fairly common in Shamanic healing practices. The state of consciousness is altered, or our trance as Anagogy said, and things shift like a kaleidescope. For that time you are 'at your own side' or on the peripheral of your waking consciousness. Through practice or ritual as suggested this can become an intentional movement. In this idea of changing our trance is that we are constantly in a trance. Our trance can be thought of as the particular way our consciousness is focused, I think. When someone "goes in to a trance" they are really just shifting the trance they are already in. What we call sobriety is our 'baseline' trance.

https://en.wikipedia.org/wiki/Shamanism