Rising Wedge in U.S. Housing Prices?

The 'Rising Wedge' is fairly reliable technical analysis chart pattern, particularly when the price rises on ever lower volume.

Every month the U.S. housing numbers reflect rising prices with a lack of sellers. Inventories down.

Two questions.
Why no sellers?.......... Are the survivors of the last crash holding on. What do they do if prices start to fall?

How will higher interest rates affect the buyers? Wages continue under pressure in the U.S. Can new buyers afford higher interest payments or higher down payments?
Will a strong dollar temper foreign demand?
What do the bank balance sheets look like with respect to housing loans?