Ego does not disappear it is raised and transformed.
Ego is in all of us as beings.
The control of the ego,
the small self,
is what is no longer expressed.
The desires of the ego,
the agenda of the ego. This is what is changed.
The ego is a part of the self.
The expression of God that is who we are.
It is in most people
the aspect of us that rules our thoughts
and expresses itself into our ability to survive.
The enlightenment is about the ascension
of the ego self into that of a higher self.
In this way it disappears
and is yet still present in its ascended existence.