In plain words
Remove the mirror and its reflected face disappears. The actual face remains, one and unchanged. So, when the intellect is absent, the Self shines without its reflection. I am that ever-established Self.
Word for word
If the mirror is absent, the reflection of the face is absent; the one actual face alone remains without differentiation. In that manner, when the intellect is absent, He shines without the reflection. I am that ever-established Self.