Pulled my 7.5BTC 3 days ago when the site was up only 4,000 BTC, I came back the next day to see how much JD was up (2,000 BTC) and now today the site is negative -100 BTC.

We being JD investors. Something must be done about huge Martingale bettors. I recommend lower house limits on consistent doublers.

I somehow have invested in the only casino in the world that loses money...

Eventually the house edge will kick in.
Actually I remember reading an article a long time ago that said the way to make $ at any table is to bet the max and quit, win or lose.
I actually wrote a simulation in QBASIC for that and it worked.
This is what's happening here.