I have friends who are still without work, though most are suffering from the H1B and financial services collapse / sensing of opportunity that took place through 2009.
It is without any doubt a tense situation to find yourself in, but I guess it is something you have to be prepared for happening (or alternatively have confidence that this will not ruin you). Even for people with jobs, as someone who found my job to start early October I started in advance of the vast majoritry of major firm consultants I know, who got pushed back.
This risk exists in every graduate degree you may choose - Lawyers are having an awful time of things. You just have to add this in to something you are prepared to stomach by quiting your job to go back to school.