On its face, this makes no sense... unless you consider this angle: Perhaps the folks running BX – and not these mysterious "beta-testers" (who may or may not actually exist) – are using this new ACH deposit system TO ARBITRAGE THE HELL OUT OF CUSTOMER FUNDS in order to stay afloat? This explains everything – the stall tactics, the missed deadlines, the delayed deposits/withdrawals, the price/volume oddities...
Tread carefully, folks.
So......basically theft/fraud, but only temporarily and with the best of intentions o_O. That would explain my disappearing (cashed and not credited) $1,000 deposit, along with the myriad of other delays and stall tactics you mention.