The profitability of this little USB unit is about 0.015BTC per day.  (see http://www.bitcoinx.com/profit/ ) This will last until the next bunch of Asics is released in the comming months.

Given the 0.015BTC profitability will diminish fast, every day is important in recouping costs. 
It should be understood that keeping the order books open will be costing the group about 4.5BTC ($500) a day. That can't be recouped once the difficulty changes.

So processing the order book as soon as possible, is in the best interest of the paid group.