The moment an exchange says don't panic, funds are SAFU, is time to get out of there as fast as you can.
Even if it doesn't go bankrupt, you don't lose a thing, but if it does...
As for the main question, it might be just how MtGox managed to stay afloat when the Dwolla funds were freezer or when Mizuno stopped servicing them, it stayed afloat using third-party solutions but slowly it reached a point where it would have collapsed even without the hack.
Anyhow this is pretty easy to check with so many users having an account here, you can ask some friend to show you the details of a successful withdrawal, in his bank statement he should have all the info, if the payment comes from a different source than in the past it means things have definitely changed, if it's the same account then there was nothing but a hiccup.
Either way, stay away from an exchange that even its founders have problems identifying who actually owns and operates it!