Board Thread:Lore Discussion/@comment-4057475-20130710075111/@comment-121511-20150217160124

I figured it was more due to the fact that Vahlok is, well, Miraak's Jailor. I wouldn't think he would take any chances regarding the possibility that a reasonably powerful individual could attempt to free Miraak, considering all the effort and lives lost defeating him. There is of course also the fact that he is now undead, and as shown with Olaf One-Eye, Draugr are cruel reflections of their former selves devoid of soul.