Board Thread:Episode Discussion/@comment-24573226-20171012080158/@comment-10390252-20171018122843

4. No, I think that Spring  could, especially if Raven is between her and Cinder and isn't looking for an attack from behind.

5. Because Salem isn't omniscient. She doesn't know what's in each Maiden's heart. So, if Spring has gone bad and joins her willingly, it isn't something that she would necessarily have guessed would happen beforehand. Additionally, I'm not saying that all the Maidens have gone bad only that Oscar (and Ozpin through him) are concerned that all the Maidens will either go bad or be replaced by supporters of Salem as Amber/Fall was.