Greetings denizens of Hyboria.  With today's patch Demonologists across the lands awoke with a nasty surprise, their AE Spells had been modified.  Now both variants of their AE abilities have a recast time component added to them.  This basically means that you will not be able to chain cast your preferred AE spell (Fire or Lightning) quick enough to kill multiple mobs at once.  You will have to rotate in both of your AE's in order to accomplish what you did...