Does that mean someone has obtained a mortgage for that? (assuming it is not a cash heavy transaction). Seems improbable with the way jumbo market is cautious now.
Why did the sellers let it slide into NOD/NOT, if they could sell at a higher price than $400K and walk away pocketing some money (and keeping their credit intact)? Since that did not happen, there is some mess somewhere: may be it is over HELOC’d or mortgages are difficult to get or the market might have buckled.