GamersNexus eventually managed to get the motherboard back, and took a look at it. Not only was it in terrible condition, there was an RMA sticker from Newegg to Gigabyte (the manufacturer). Gigabyte told Newegg it was broken and offered to repair it (for a price); Newegg refused, and then still sold it anyway.
(Actually, looking again, this is mentioned in the article, but it bears emphasis.)