So before Warcraft 1, he fights Aegwynn in his "avatar" form. His "avatar" form gets defeated, but he then invades Aegwynn with his "full" form and lays dormant in secret (and I assume he leaves his body somewhere behind in the Twisting Nether...?).
He then gets passed into Medivh as Aegwynn and some court Mage have behbees.
Medivh opens Dark Portal, he gets stabbed by Lothar and friends, and Sargeras goes *poof*.
Where? Where does his spirit end up? When Sauron and Voldemort get defeated their spirit remains lingering somewhere in the world in which they're defeated, so is Sargeras' spirit still in Azeroth? Did it travel to Draenor through the Dark Portal? Did it invade someone else?
Where in world is Sargeras San Diego?