Can I get rid of a cydia app w/ SSH?

I installed FontSwap onto my iPod and installed a font. They were both from trusted sources, but now, when I try to turn on my iPod after having resprung it, it won't turn on. It goes to the apple logo, then makes the BZZT charging noise, and keeps doing it. I can SSH into my iPod even though it's doing this, and I'm wondering if I can remove the app and everything having to do with it using SSH? Thanks.