I think the one(s) who found him won't tell you how. since one of them tracked and contacted his family.
It seems to me that the people with the lease amounts (0.1- BTC) are being paid out first so he can pay off as many people with the least amount of BTC.
I think that the admin should AT LEAST payout every day the profit he made.
If he has 500BTC from us, with the profit of 1% a day, that's 5BTC, he could AT LEAST pay out that amount of 5BTC
@Hongo & yonce, could you please update your amounts?
I never invested in btc-arbs. I joined bitcointalk to warn about the program prior to it scamming. Deeply sorry for your loss, and I'll help in any way I can on getting more information on the admin.
My strong belief is that the admin is paying off small amounts and paying here and there to string people a long while he plans his end game.