Then who was the Ysgramor in Sovngarde? Did Ysgry had the ability to take on human form? An old post by WormGod suggested that some dragons did so, and you can make up a story of Olaf One-Eye being Numinex's human form.
Well, it has been said that Ysgramor
was a Dragon, not that he still is. Maybe he became a Human? After all, if a tiger can become a Dragon, why would the other way round be impossible? Perhaps this shapeshifting could be a consented sacrifice in order to transmit the power of the Voice to some humans? Or perhaps it was some expiatory punishment required by Akatosh?
Also, aren't we witnessing a new developpers roleplay
à la trial of Vivec? Quite passionnating, I hope it'll last several threads.