It makes you wonder who responsible. Anyone who knows Doog even a little bit, knows he will never pay "protection", even if it meant the end of the site. To me, this is almost certainly a competitor. I doubt Stunna would do such a thing or coinroll.it, most likely a new competitor. So what new sites have gone up to compete with Just-Dice and are run by a known scumbag? Only ones I can think of are letsdice, letdice and um, letsdice.
We have no proof of who it is.
I'm told it's expensive to mount DDoS attacks. So what if I put up lots of different load balancers? Then they'd have to attack them all, costing them more money.