Then it seems that you have quite a racket going.
Betking will be taking the cumulative investors' profit to buyback tokens, reducing the bankroll, then Betking alone will be accumulating profits on those tokens to infinity with no benefit to remaining token holders.
Eventually, Betking will have purchased the majority of tokens back with investors' money (Bankroll profits) - in essence diluting remaining token holders since Betking retains the re-purchased tokens and earns all future profits on those tokens. Sounds like it's good to be Dean / Betking.
If I'm misunderstanding, please let me know.
As far as I understand, you have no obligation selling back your tokens to Dean. You can keep them as much time as you want and thus increasing your profit.
Wait for Dean confirmation tho.