Why would Evon Gnashblade, a charr of all things want to find out how Abaddon was defeat. Unless it wast to just witness the fall but research on how he fell, so that the charr than the proceed to actually chase down the other gods.
What if this is all just a ploy so that Evon can find out how to defeat the gods and then steal their powers so he can become the new khan-ur which is the dream of most charr.