So Aaron has created plenty of problems for Thor. The hammer is sentient, Thor is unworthy, Jane holds the hammer, and Odin is basically evil. But all these problems can be fixed by explaining why Odin is evil. What I would do is say that the Ones Who Sit Above in Shadow survived, but need the Asgardians to move on to the next cycle to continue to survive. So since there isn't another cycle to return to, they take Odin and begin to replace him with what the Odin would have been in the next cycle. Except this Odin is not the benevolent All Father we've come to love. Slowly throughout time the current Odin is successfully replacing the old Odin. The new Odin wouldn't have made a worthiness enchantment, because he's a jerk, so to fix this a new origin for the hammer is made. Now this hammer is sentient and prefers Jane over Thor. No one notices that this is happening until Beta Ray Bill's hammer disappears from existence, because only the classic Odin could and would have made such a weapon and there aren't many Mother Storms to replicate the current origin. But Bill's bond with Stormbreaker is too strong so he sees through Those Who Sit Above in Shadows lies and recruits Thor (and Jane if she still has the hammer) and they eventually face down the new Odin. They stop him and Those Who Sit Above in Shadow and everything is restored, Jane is unworthy and Thor can lift Mjölnir, Mjölnir is what it's always been, Odin is restored, and Bill has his hammer back. So that's how I would undo Aaron's madness. Thoughts?
The 'whisper' was a post hypnotic suggestion that caused Thor to tap into mjolnir's innate inter-dimensional capability, transferring Thor to the SJW universe. This alternative reality, tagged as 'crapverse' mirrored ours closely but with subtle yet distinct differences, which would explain many odd events and occurrences. Once there and without mjolnir, which Thor had voluntarily rejected though his sub conscious knowing he'd been mind controlled (a sort of built in safety device) anything could happen, meaning escape was tricky. Instead of the Ones Who Sit in Shadow ultimately pulling the strings, a shady group of corporate raiders know as the 'well-intentioned but ultimately misguided elite' controlled Thor's universe.