To add to what @Combatbulter already said, the concept of free will doesn't apply to corpses because corpses don't have the capacity to have any will, free or otherwise. How this still eludes the more brilliant people on this forum when it gets hammered every time one of you brings this equally brilliant tangent is beyond me. They get free will once undead and can return to the grave, join the Forsaken or go their way. And it's not like there's anything here that shows this Forsaken to be one raised by the Val'kyr rather than the Scourge back in the day.