What you call Ego is nothing more than a collection of fear based thoughts and beliefs, created to answer the Question;
"What would it be like to be separate from God?"
It is an innocent question.
No one has committed any sin, and no one has been "thrown out of Heaven".
Of course, separation from God is not possible, so to answer the Question the Ego was created, to manifest a Dream in which the Answer to the Question could be played out and experienced.
Just like a "Fun House" or roller coaster ride, the experience can be frightening at times, but it is ALWAYS totally SAFE.
No one ever gets hurt, and no one dies.
Remember that You are the One who asked the Question, and You are experiencing the Answer, safely, securely, in the form of a Dream.