I installed the simple background jail broken app and now my phone, whenever, I open up an app makes it's window really small and completely unusuable so I can't even uninstall the app. How can I fix this??
Can you ssh into your phone from your computer? If not and you REALLY cant navigate back through cydia to uninstall that program then your only option is a restore.
If you can ssh into your phone (click here for tutorial), go to /private/var/stash/applications/ and delete simple background.app
Restart your phone, and you should be all good