>Leader of the Horde through the Second War
>Die-hard hater of humans
>Personally slays Anduin Lothar in cold blood
>Gets arrested by Turalyon and imprisoned in Lordaeron

Flash forward a few years

>"Escapes" his imprisonment from the most fortified, well-guarded city on Azeroth
>Somehow knows exactly where the Horde remnants are camped out
>Goes to them and tells them the old Horde was evil and that their future should be a peaceful coexistence with the humans

One can only ponder what the Alliance did to Orgrim during those years of imprisonment.