I would associate the current price action with general real estate market sentiment. The market is probably expecting more out of cycle rate hikes, steady decline in land and home prices, increase in mortagage defaults, real estate co's decline is sales etc.
But I believe VLW has been hammered a bit too much and seems to be good value at these prices. I have been watching from the sidelines and will look to buy in soon. This should bounce off these levels else this could go down further.