Even experienced banker friends tell me that they think the worst of the US banking troubles are over and that things are slowly getting back to normal. What is lacking in their rosy optimism is the realization of the scale of the ongoing deterioration in credit markets globally, centered in the American asset-backed securities market, and especially in the market for CDO’s—Collateralized Debt Obligations and CMO’s—Collateralized Mortgage Obligations.

Indeed the profits being earned in the past seven years by the world’s largest financial players from Goldman Sachs to Morgan Stanley to HSBC, Chase, and yes, Deutsche Bank, were so staggering, few bothered to open the risk models used by the professionals who bundled the mortgages. Certainly not the Big Three rating companies who had a criminal conflict of interest in giving top debt ratings. That changed abruptly last August and since then the major banks have issued one after another report of disastrous “sub-prime” losses.

The peak period of the US real estate bubble which began in about 2002 when Alan Greenspan began the most aggressive series of rate cuts in Federal Reserve history was 2005-2006. Greenspan’s intent, as he admitted at the time, was to replace the Dot.com internet stock bubble with a real estate home investment and lending bubble. He argued that was the only way to keep the US economy from deep recession. In retrospect a recession in 2002 would have been far milder and less damaging than what we now face.

Of course, Greenspan has since safely retired, written his memoirs and handed the control (and blame) of the mess over to a young ex-Princeton professor, Ben Bernanke. I can say I would never trust monetary policy for the world’s most powerful central bank in the hands of a Princeton economics professor. Keep them in their ivy-covered towers.

Now the last phase of every speculative bubble is the one where the animal juices get the most excited. This has been the case with every major speculative bubble since the Holland Tulip speculation of the 1630’s to the South Sea Bubble of 1720 to the 1929 Wall Street crash. It was true as well with the US 2002-2007 Real Estate bubble. In the last two years of the boom in selling real estate loans, banks were convinced they could resell the mortgage loans to a Wall Street financial house who would bundle it with thousands of good better and worse quality mortgage loans and resell them as Collateralized Mortgage Obligation bonds. In the flush of greed, banks became increasingly reckless of the credit worthiness of the prospective home owners. In many cases they did not even bother to check if the person was employed. Who cares? It will be resold and securitized and the risk of mortgage default was historically low.

That was in 2005. The most Sub-prime mortgages written with Adjustable Rate Mortgage contracts were written between 2005-2006, the last and most furious phase of the US bubble. Now a whole new wave of mortgage defaults is about to explode onto the scene beginning January 2008. Between December 2007 and July 1, 2008 more than $690 Billion in mortgages will face an interest rate jump according to the contract terms of the ARMs written two years before. That means market interest rates for those mortgages will explode monthly payments just as recession drives incomes down. Hundreds of thousands of homeowners will be forced to do the last resort of any homeowner: stop monthly mortgage payments.

Here is where the Ohio court decision guarantees that the next phase of the US mortgage crisis will assume Tsunami dimension. If the Ohio Deutsche Bank precedent holds in the appeal to the Supreme Court, millions of homes will be in default but the banks prevented from seizing them as collateral assets to resell. Robert Shiller of Yale, the controversial and often correct author of the book, Irrational Exuberance, predicting the 2001-2 Dot.com stock crash, estimates US housing prices could fall as much as 20% further in some areas given how home prices have diverged relative to rents.