If you went to law school because you really want to be a lawyer, and that dream/goal was worth leaving a well-paying stable career, then if I were you, I'd probably be incline to stay. If you leave, and this really is what you want to do with your life, you may regret the (hopefully) short term problems of finding a job. You T10 diploma carries a lot of weight, and will help you get a job sooner or later, provided you really network, use your alumni network effectively, and be willing to be flexible in what type of job you're looking for.
If you went to law school only because you saw it as a cash cow and a quick way to get rich after you graduated, then I would leave. While a J.D. may have at one point been a sure-fire way to make a huge salary within a few years of graduating, those jobs are now scarcer, the competition for them fiercer, and those of us that do have them are either concerned about losing those jobs in the near future OR simply wish we could afford to do something we'd enjoy more.