Hero Splitting

Darty and wbn, let's not quote Vic :)
Have you guys not encountered this yourselves?

I haven't encountered it, but wbn says he had it even with computers. I was also told about a game with bots.

because the position of each hero in the save file is not written in one place, but in at least two.

Have you really analyzed the save file structure so well that you can make such statements?