Too late, figured it out. I went into safe mode and deleted it there. Basically steam had broken a game, Dead Realm, while downloading it. I couldn't delete my steam folder, and eventually tracked down the three files I couldn't delete to the Dead Realm downloading folder. If I tried to select them my windows would crash and if I tried to delete the folder it would make no progress, as would the steam download. I couldn't move it up or down the queue either.