Maybe because no one has mentioned it, but it was DC's fault that they pulled the episode for not renewing licensing agreements for people like Rocket, Icon and Static Shock (Static, who made an appearance in that exact episode, but powerless) since they're not DC properties.
At least that's the rumor, so it's likely CN's hardly to blame. They were completely ready to air it since I hear claim of a lot of people's DVRs were still set to record it.
DC Nation is coming back on January, probably to edit out the characters or renew license agreements. We'll see how that goes....
Though I won't forgive CN for cancelling Samurai Jack, Sym-bionic Titan, Megas XLR, Generator Rex, Transformers Animated and Thundercats.