Actually is still consider season 1 cos they divided the 26 episodes into halves and people thought is was season 2. At the end, Aya did turn back to good but the ending is a bit bad and fans were hoping for season 2 but the show got cancel.
The rights issue is the most likely but it's still weird that DC didn't know anything about the shows being pulled. It's just one of those weird situations where no one knows exactly what's going on but everyone's annoyed by it.
Indeed~ I heard that the characters Stephanie Brown, Icon and Rocket were the few characters that is having rights issues and thus it was been halted, some say that future episodes that have the characters mention earlier might be removed from the season.
Icon and Rocket, yes. Stephanie Brow, no. They own the right to Steph but Dan DiDio just HATES her and I heard he threw a big bitchfest when he found out she was in the ep. Don't know if that's true or not but after what happened to the Smallville comic I can believe it.