two things
a) another lesson why it is bad to have money on an exchange...I wish there was a way of hedging BTC against fiat without trusting the money to a third party
b) it is not a coincidence that this happens now. Every time BTC goes over $1000, PBOC is interfering. Obviously they do not wish BTC to be more than $1000 permanently.
for sure those exchanges will now bully users using the frozen funds....
The only way we could have money in a broker to take advantage of quick price movements its through some sort new decentralized technology. Bitsquare.io is not what we want, that is a marketplace. We need a poloniex replacement in a decentralized way.
I think until lightning network is operative, such technologies will not be possible. We would also need segwit.
Until then, it's time to buy and hold on our cold wallets, it's not worth having any BTC in exchanges for any relevant amounts of time.