User blog comment:Rafe Adler/"Rock Never Dies" Discussion/@comment-28192538-20161204160949/@comment-26982641-20161204165140

Mlgrsd, Handcuffs were special. They had enochian runes. Some enochian sigils disables angels powers, strength etc. It makes sense that Dean used them against Luci.

And yeah, writers don't want to kill fan favorites at this time.