ODIN's brother as I recall is the God of Fear...
THOR is revealed as having the fear of losing the hammer
THOR is revealed as having the fear that neither he nor any of the Gods were ever worthy
Now that fear has taken hold of THOR and he now believes it so bad that the hammer has left him. Sentient Storm within it not withstanding.
I also added a pic of when Jane first becomes She-ra/THOR the letter S that appears in the inscription....a bit serpent shaped? or imagination?
Good observations. I don't think that was/is Aaron's plan but it would sure be an excellent and believable way for the next writer to clean up his mess.