Blizzard (via Nethaera) has released a nice long statement on the Glider outcome over on the forums. She basically runs through the history of the case and why Blizzard is against what Glider is doing, and why going through the courts was the only route left to them. She says that Warden (though called only "security measures") was enabled in response to player concerns about bots, and that when the MDY/Glider people circumvented Warden, their only recourse was to seek an injunction through the courts, which, as we've reported recently, they plan to have soon.
And that's obviously not a bad thing -- most players will agree that MDY was allowing players to cheat (by letting the game play automatically without them in control), and thus preventing the client from being used in-game is a good thing. It's just that DMCA issue that might be a nagging problem -- we'll have to see what happens with that in the future.