Subtle but important point. The deflating asset bubble does not cause a recession *unless* the asset values have been transformed into liquid money in some fashion. If it has, the drop in asset values translates to a drop in circulating money. If it hasn't, it doesn't.
In the housing crisis, the (faked) asset values of the houses --> the valuation of the mortgages --> the valuation of the mortgage-backed securities --> the valuation of the "collateralized debt obligations" made up of slices of MBS --> the valuation of the money market funds which put their money in the CDOs. The revelation that the mortgages were no good meant the money market funds were no good.
In 1929, the inflated values of stocks --> inflated values for overnight loans from banks to brokerages --> inflated values for bank balance sheets. So when the stocks crashed, the loans from banks to brokerages went bad, and the banks became insolvent, so there was a bank run.
For an asset bubble bursting to trigger a recession, there has to be a transmission mechanism between the asset value and the money markets. There are a lot of these. It's good when government OUTLAWS the transmission mechanisms, because it makes for a much more stable economy.
Right now, it might be people borrowing against stocks, like it was in 1929. Stocks drop -> margin loans are called in -> people have less money. But I don't see signs of big overextension there, though I may have missed them.