If you're stuck in USB mode can you access the file directory of the device?
If yes, look in the root directory and find the file called "pim.vol" because it contains all of your contact information.
If no, I don't know how else. You might be able to blind install a program like
mymobiler or
dotpocket to view your device's screen on your computer's screen. Then you could manually extract the pim.vol.
You could always try to take the phone into a local service center and they may be able to help.
Good luck, and keep us updated.