With the greatest of respect, you're an idiot.
They HAVE to comply with KYC and AML laws. If they don't, their business and our funds are at risk. How do you NOT get that. This isn't an unregulated alt exchange - Bitstamp interfaces with the fiat banking system, if they don't play by the fiat banking system's rules, they are finished.
How they didn't terminate your account and ban you is beyond me.
He's right though and depending how much money you had on the exchange, you might have committed a financial crime by lying about your identity. Using a fake name and withdrawing/depositing money under it, IS money laundering, and what you have done, a crime.
Bitstamps best course of action at this point is to actually just seize your funds and block your account. What they do with that money they will have to let lawyers decide at some later date, but most likely they will just let it sit on their balance for years before attempting to do anything with it. You've committed a crime and attempted to make them your accomplice. Until they have better guidance from the government on what to do, the best thing is to do nothing- including not responding to your support emails (as they could say something that would get them in trouble later on). They will probably pass on your details to whichever financial enforcement agency is responsible and let them decide to prosecute you or not at their leisure.
Either way, you've essentially forfeited your money in the near-term.