Just for fun, let's say the Allagans ran into the problem of their people being "tempered" by the primals, but figured out a way to deal with it. Unfortunately, this involved sucking the victim's soul out of the body and "filtering" it through unaspected crystals, before storing it in a "core" that could be inserted into an artificial body. It could even have been a voluntary process, undergone to allow them to resist tempering while attempting to deal with the primals. The devices to accomplish this would
likely still exist, somewhere amongst the secrets of Azys Lla or another of the Allagan's research facilities still undiscovered.
I should think having your soul trapped in a crystal sphere might even allow Hydaelyn to speak with you quite easilly.