It already happened gradually over the last two months as payment processors and e-commerce sites cut their channels to the exchanges, ahead of the deadline.

All three exchanges are now working with withdrawals/deposits, in CNY only, to their corporate bank accounts; this arrangement is believed to be acceptable to the Government.  (BTC-China may also try to continue using their vouchers in a more limited fashion.)

So, the price will probably resume its normal behvior after the holidays -- that is, steady except for the usual level of unexpected rallies and crashes.