I was charging my iPod in the car and I tried running a custom app, but it crashed instantly. Unfortunately, I am traveling and have no access to my iTunes, so I can't restore. All downloaded apps don't work now. I rebooted many times and reset settings, but no success. Any help?

Forgot to mention that I have 2.21 iPod Touch software.

Would reinstalling all the apps work?

EDIT: nevermind, didn't work. I need help!