If an account holder (or a group) were to pursue this debt through the court system they would probably get a judgement and gain access to BitFloor's funds -- and if you have funds (USD or bitcoins) in a Bitfloor account, those are Bitfloor's funds as far as what a judgement against Bitfloor would have access to.
Please stop spreading misinformation about the debt responsibilities and client holdings of BitFloor as it relates to the US legal system.