How to recover corrupt sstates in PCSX2?
Solution 1:
My instinct is no. I did a little checking, and since the PCSX2 save state file is just a renamed zip file, it's easy enough to look at. The file you're missing in the slot 8 file is just four bytes, 00 00 0B 9A to be specific. You could create that file and name it appropriately to see if that helps.
As for the fully corrupted one, if your hack to load the others doesn't work, it probably won't be recoverable. Sorry. I can't really say more without actually having access to the file.