How far south in Socal are you willing to go? I'm not there anymore and most flight schools in the area were seriously struggling (I was in San Diego), but you might want to give a go at KCRQ. There's 3 flight schools on the field (and 1 helo school) and a flying club where you should be able to get into if you have enough dual given. The schools there were slowing down when I left (I worked at Pinnacle Aviation Academy, good school, good people) but you can check them out. It's a fairly high income area so they were still getting walk-ins even though the economy has been in a slump. Hope it helps with your search, sorry I don't have anything specific and all I've got is flight school info.
~Glen