Originally Posted by ares834
Well, if they are referring to Surtur there rather than the Dark Elves; then, yes, it is definitely referring to Odin.
They AREN'T referring to the Dark Elves. Because it's been said ( in the synopsis I believe) the Asgardians have had a fallout with the Dark Elves in the past. Which means they would be known about.
The enemy Thor and Heimdal are speaking of MUST be either the leader, Malekith, or Surtur, assuming he is trying to release him.