@doctorow - Two things I find troubling in your coverage here.
The first is using 'Money Laundering' for moving your own money around. Money laundering is the process of 'cleaning' ill-gotten gains. People are using BitCoin for this - but moving your own money with BTC - say as a remittance to family back home is not money laundering. Nor is moving the proceeds of selling a massively over priced Beijing apartment to buy a swath of Vancouver. As problematic as that may be.
Second is that it is important to distinguish the actions of the PBOC. The actions taken in January were about controlling pyramid schemes and speculation. Specifically requiring crypto-currency trades incur fees and prohibiting margin lending and other trading tools that encourage or enable speculation and gambling. After these measures were tested out (and possibly to avoid scandal and problems around huge leveraged positions crashing) transfer of BTC (and in some instances other non-cny currencies) has been halted while exchanges implement new 'review measures'. It is speculated that these will include limiting withdrawals to 'registered' addresses somehow linked to real name registration and licencing in within China.
This is a fast moving and fascinating situation with big technical and social implications. It deserves good coverage.