"The Permanent Fund Corporation cannot directly pay the PFD"
I thought the problem stemmed from the transfer of earnings by the AK legislature, not the PF corporation, which was vetoed by Gov. Walker?

"Walker's salary cannot be reduced."
Not by legislative act.  Isn't that is also a different issue from "his voluntary election being constitutionally protected" as was what I thought your original objection was about?  I don't think anyone is required to take a salary as they have the freedom to elect to work for free/reduced rate.