The cool thing for me, is that by and large, the economy is mostly legit and people are honest. There have been some major dumb mistakes, but that's mostly due to bumbling incompetence rather than outright dishonesty.
My guess is that the mybitcoin guy simply fucked up (was cracked) and disappeared.
People don't spend $2000 to open an anonymous LLC in a tax haven to conduct legitimate business.
People only do that to commit tax fraud, and now, bitcoin fraud.
A WHOIS lookup takes 2 seconds. Even without the WHOIS information I already knew it was a scam from their business model.