User blog comment:WeissSchnee/Today's Episode/@comment-6906412-20130830025815

Does anyone else think the chess pieces are voodoo-linked/connected in some form or fashion to the students? It would explain why Ruby is flying down at the end (Yang kinda jerked the knight into the air when she picked it up) and why Ozpin doesn't say anything about the "relics". Or I could be totally wrong and it could be just a random launch from a large Grim (similar to Jaune and the scorpion) or Weiss did something to throw Ruby, something like that.