That is the biblical definition of "death" - when your soul, body and spirit become separated - usually when the body expires.
Correct, the human body disintegrates into nothing.
This is how God shed his blood and died. This is also how Jesus raised himself from the dead, while he was dead as he predicted he would.
This is where we differ in explanation (I believe). You state God raised himself by means of the Father having the same title as the Son.
I say, to be more precise, God the Father raised God the Son (a separate person).
For the sake of conversation, who would be right?