Board Thread:General Discussion/@comment-14676729-20130806150831/@comment-101.174.8.211-20131221022435

To get it unstolen, go back to the save just after you discover Sky Haven Temple, Take the sword, and then complete the quest Season Unending. Get told to kill Paarthurnax, beat the S**t out of him, then find Delphine. Only then can you call Odaving to Dragonsreach.

Note: To do this quest order you may have to replay a lot of the game.