No, first - we will reverse DRK transactions made by high rates so it will not be 300 BTC but less. Second - flaw made this possible were fixed fast. Third - yes we will not be refunded in full - but we are going to refund customers in full by our own funds.
And Again - I agree this happened by our fault. And we will compensate harm.
How will you decide what a "high rate" is?
It's impossible. You can't reverse people's transactions. DRK value has dropped since.
The price was 0.0022 before, now it's 0.0015. If someone sold 1,000 DRK at a rate of 0.005, for 5 BTC, and you reverse that transaction, then they've lost 0.7 BTC because they can now only sell for 1.5 BTC instead of 2.2 BTC.
The flaw was C-CEX's. If you reverse the transactions, then that's not fair. Nobody will use C-CEX again. And it's impossible for you to decide which rates were "too high".