I greatly appreciate your explanation of Zechariah 13:2. Would Isaiah 53:8 and Daniel 9:26 be good examples of the removal of a "physical" presence (the Messiah in this case) without removing the influence? Clearly Jesus' influence, in our lives, remains today even though He has physically been removed from the land.
There seemed to be a "physical" aspect to the demons since they could speak and exhibit physical characteristics, even though not with their own bodies.
Just a thought as I read your comments.
It does make a good illustration and it is one I had not heard of before.