"From 1929 to 1934, U.S. personal income plunged 44%, real output nosedived 30% and the unemployment rate soared to 25% of the American labor force." and the great depression still had 5 years left.
"By Jan 1, 1934, as many as half of all residential mortgages were delinquent" let alone all the ones that had already failed.
And it can fall far further in the next one. It's a house of cards and the bottom is far further than you might expect.
We had a positive personal savings rate last month. Once you have a positive saving rate there is no long term problem with spending. (http://www.bea.gov/briefrm/saving.htm)
Now government spending is honorably out of whack, but that's not really related to what you're talking about. (http://www.frbsf.org/education/activities/drecon/answerxml.c...)
The policy prescription for the current crisis is to beef up food stamps and heating assistance programs so people don't starve or freeze, and then let all nonviable businesses fail as quickly as possible so they can be reconstituted as profitable companies.