Seriously, if they are hashing now and never delivered a Neptune to anyone yet or compensated anyone and still have all that pre-order money how greedy does a business need to be?
I think it's pretty clear they're going to be mining from here on out, far above any self-imposed 5% limit. They'll use some of the BTC to provide refunds, they have to, as they kept the door open for 66% of their new orders to be refunded. They'll need at least 66% of that money just to stay solvent with these new ventures, so they'll use the mined coins to pay off people, and to help keep their business running.
Afterall, it's nearly free datacenter equipment for them thanks to everyone who gave them gobs of cash from the beginning, and their systems were priced to be generous on the profit side.