User blog comment:FairyRaven/Fairy Tail Chapter 389: The Twin Dragons vs. The King of Hades, Review and Commentary/@comment-6152051-20140620094151/@comment-5668006-20140620163044

Im pretty sure they will just defeat keith instead, at last that makes the most logical sense. The obly other option would be destroying the control room which also nakes logical sense and doesnt seem hard. Hell, id crawford is a reanimated corpse then that means he can be disposed of as well. If natsu uses his flames right and burns him to a crisp or erza slices him to pieces its not like a necromancer can make something from nothing, they require an actual corpse