Just curious - did staying in the brine that much longer cause any visible change to the outside of the cheese? I'm guessing the cheese wouldn't take on any moisture, or would it?
I'm asking because I brined an iberico too long, just yesterday, when I took it out of the brine, it was floating and had a bit of a sponge feel, had developed one crack. I let it harden off overnight and it is back to appearing normal, crack is gone...but I'm concerned there was a yeast or something going on, that what I saw had nothing to do with being in the brine too long. So wanted to compare with what you observed, just in case - trying to decide whether this round is chicken food or worth aging!