Rook's class changed

So about halfway though my canon playthrough with my mage Rook, I decided to make a warrior with my nephew to show him the character creator and to test out warrior gameplay. After testing it out, I deleted the new character and went back to playing my mage for the night. I saved the game, turned it off and obviously thought nothing of it. The next day when I booted up the save file, I found my mage Rook was now a warrior with starting gear and random skills picked out from all over the skill tree. When the notes for patch 3 released, I assumed from one of the dot points that the issue would have been fixed and I could continue playing, but I was wrong. It's been almost a month and I still haven't been able to continue playing as I enjoy playing a mage so much. I really hope I don't have to lose 70 hours of gameplay.