You don't need an excuse to claim your money back. People that have been getting refunds haven't been getting them back from OneSixthBruce, they've been getting them back from Paypal and their credit card companies. OSB aren't responding to anyone and ignore refund requests. There's no penalty for getting a refund; OSB is clearly going bust and if you have money tied up with them, you need to get it refunded as soon as possible.
Ditto to this. I was one of the lucky ones and got refunded £880.50 on 17 pre-orders but that was when they were still communicating with (some) people. If you are still within the 180 day Paypal window or used a credit card I suggest you act quickly. On their terms and conditions page they say that you have to pay "A cancellation fee of £10.00GBP will be levied in event of customer cancellation for each order" however I got all my money back. Act Now.
I had been buying from OSB since 2011 but no more. Their refusal to engage with customers legitimate concerns is terrible.