There is a development bug. Now we can say, they paid 3BTC to find this bug. I hope it will not affect to future work of this casino.
It is an expensive cost to find bugs for such very young dice site like WinDice.
However, if all bugs found and problems fixed completely, and the site got significant real gamblers, bright future to come.
I hope that the 3 BTC lost does not hurt the Windice site too much.