Join the club of the real world. It is scary to not have school to fall back on and it would have been better to have good grades, but it is not the real world. Now you will have to choose something and you may not like it. Believe it or not there are a lot of people in this world that don't love their jobs. If you got into a T10 school and graduated I am sure you will figure something out and things will probably work out, but the real world is not as ideal as anyone wants it to be. Unfortunately, you cannot use the I think I will go to law school to get out of the situation anymore, but you will figure something, because you are going to have to. Choose a path and go down it you can always change it, but you need to make on decision whether it be police work, teaching, immigration lawyer, whatever give it a shot if it sucks you can always get out of it. You are not signing any 30 year life long commitments.
There are numerous federal law enforcement agencies that would be interested. You mentioned the FBI, but there are other organizations DEA, Homeland Security, Secret Service, I am sure quite a few more would be interested to hear from you. This whole war on terror has opened up a few jobs in Federal Law enforcement. If you want to be in California there are a lot of facilitator jobs for J.D.'s. In San Francisco the organization is called Access and it just provides free legal service to the poor. The office is in the courthouse and I have some friends doing it that seem to really like it. I believe every county in California is required to have a similar program, but I am not 100% sure. These jobs obviously don't extremely well, but you would be a court attorney and have a paycheck, which is nice. I am sure you will figure something out despite what random people say on the internet there are plenty of ways to use a law degree.
Thanks bigs. I like the "facilitator" idea. I'm a little iffy about DEA and Homeland Security, just b/c I'm ambivalent about my country's drug and immigration policies. I was in the military before law school and don't like the idea of fighting for causes I don't believe in.PT can be brought back to snuff in 3 months. Eyesight standards are generally correctable to 20/20 with contact lenses. At least, that's what it was for FBI last time I checked.