Heh, so I had this idea that all this pain was building to an unbearable level, just power and pressure building inside him, and then...the TF was nearly over and the only thing left to transform was his nose...okay, let's run with that! So with a quick, anticlimactic pop, his nose is hedgehog, and all that pressure is gone, the TF complete.
I did not plan out this story beforehand, but whatever, just running with it! What's with the world shifting? Eh, sorta touched on next page.