Just a few suggestions:
Just tell people the fucking truth. It's totally easy to understand that Bitcoin exchanges are being hassled by regulator and the established financial institutions and what-not. I would have a lot more sympathy and support for Mt. Gox if they didn't jerk me off with the BFL-style 'several weeks' bullshit.
Also, it should not take a rocket scientist to figure out that if you tell only your 'facebook friends' that a policy change is going to force people to send an identity theft kit or lose access to their funded accounts, it's going to piss people off. Don't pull shit like that. It is despicable business practice, and anyone who notices it will remember it for the duration.