I kinda doubt those of us who aren't programmers can. Sounds like he cracked open the game's code to do that.
Of course, like I said a couple pages ago, sure would be nice if a code-savvy person could create a mod to disable autosaves and share it with the rest of us...
I haven't actually tested it, but it looks like IE Mod adds an option for that.
Scratch that. Sorry. It just moves when the autosave happens. That said, it means it should easily be possible to remove the autosave completely for modders.