Board Thread:Episodic and Issue Discussion/@comment-47881-20130309131959/@comment-5624498-20130311190709

Not too surprising they got away with blood... as it was merely a "blood squib" to simulate injury. Same thing happened with Artemis in "Depths."

As for Ra's al Guhl, they probably got away with it because Ra's is practically immortal... so the creative team could say, "Well, we didn't really kill him, Ubu saved him in the nick of time."