Thank you Colkoch for your response
We all have our Being in God as do all created life forms.
We are more than flesh and blood we all have a divine spark one of God’s Spirit (Truth) within us 
“God is spirit, and his worshipers must worship in the Spirit and in truth."
You say
“It (ego) is not in and of itself capable of meaningful rejection of its ultimate creator or the Ground of its Being”
The divine spark (Consciousness /freewill) within all human ‘Beings’ can separate itself from its Creator by rejecting Him, and we do this when we reject the essence of His Love which is Truth. 
“He who rejects Me, and does not receive My words, has that which judges him--the word that I have spoken will judge him in the last day”

kevin your brother
In Christ