How the tongue got wrapped that way? What were the intermediate stages?
Hopefully this should answer your doubts, it both debunks the "impossibility" of such evolutionary pattern and explains how it happened.
The unusual appearance of the woodpecker’s "tongue skeleton" has inspired creationists to use it as an example of a structure too bizarre to have evolved through chance mutations which produced functional intermediates. As the following information shows, however, the strange tongue of woodpeckers is actually just an elongated version of that found in all birds, and is in fact a perfect example of how anatomical structures can be shaped into new forms by mutations and natural selection.
Source = Anatomy and Evolution of the Woodpecker's Tongue by Rusty Ryan Copyright © 2003 [Posted: May 6, 2003]