Customize screwed up keyboard and that causes crashing

I loaded a new skin for the keyboard on my touch and it didn't work properly, so I tried to change it back to the old default keyboard, and customize (1.18) always opens a dialogue box saying "low memory, please delete photos..." It doesn't seem to have changed it properly, because everytime I open up an app that uses a keyboard it either crashes, or the "Go" button is all a pixelated green. And trying to use it just causes the springboard to restart. I have already tried a "hard reset" and rebooting several times. But nothing seems to help. It makes the ITMS crash when attempting a search. Any ideas as to how to help fix the keyboard? w/o performing a restore?