On reading this article, I find the guy not to be biased in conclusion but focused on factors that are of little interest to Piggies .
I think he is most interested in the stock prices of housing related companies, and they do indeed rise a long time before house prices stop falling. They are also a function of volume more than prices due to the operational leverage of such companies: especially as the balance sheet impact of the crash in land prices has been factored in already.