Do you have a cold wallet address that is undisclosed? According to dicesites.com, your cold wallet addresses are
146syqE3vnfQp4VauBRUnUuAgvxMoitxcK and
1P8yKwe4LMRfy1kCBgC97w6Z3D3cNLYbxg, however neither of them have any transactions out of them for over a week.
I would think that after that kind of win that he would want to have a withdrawal processed so he can at least temporarily be in control of his
BTCWithdrawals from the coldwallet at bitdice are processed within 24hrs. I agree tho that with this amount of winning it should have been processed sooner.