I don't think that is going to happen and I think the same price as we have today even there is no hacking incident because I don't think investors will invest.
Most of the investors won't buy bitcoins at the high price so I don't think that price will increase on that time.
They are just going to wait for the price to decrease before buying so the movement will be the same.
$900 seems to impossible to happen even bitfinex hacked didnt happen after all, as you mentioned investors would not intend to invest anymore regarding to its price but there are really big investors would really risk on the current price because they have high hopes for bitcoin.