It was all a dodge, IMO. No one cared about Batgirl before; most people outside this and similar sites probably never heard it, or got it confused with the horrible CW show Batwoman. Now though, there is quite a bit of interest. And in a week, they'll release it and make...well more than they would have, with much evil twirling of mustaches no doubt.
Well, that's my crackpot theory of the day; it would be hilarious if it turned out to be true.