Board Thread:Episode Discussion/@comment-410526-20160116155944/@comment-26206856-20160117163405

Nope. It stopped working because of the EMP effect of the magnetic pulse Pyrrha sent out. You can clearly see Penny grasp her chest like having a heart attack as soon as the wave passes over her. This also likely shut down her aura generation, and by magnetizing her and her swords, they attracted each other hence the zipline effect.