Well, I don't know much about structure, but this is sketchy.

I guess I'd call this a questionable bearing condition, what with the decidedly spongey wood under there. Post feels rock-solid, but it's hard to tell how well it's transferring load down to my pier. Opting for the scientific method, I had my neighbor watch while I jumped (gently) on that corner. We decided it would last the night. And it did.
Paul gave me some instructions for shoring up the roof when removing the rest of the structure. Oh, the things I ought to write down!