*facepalm*
Assuming diags, mmcblk0p1 & the userstore are mounted:
Code:
rm -rf /mnt/us/screensaver
rm -rf /mnt/base-mmc/opt/amazon/screen_saver/600×800
mv /mnt/base-mmc/opt/amazon/screen_saver/600×800.alt /mnt/base-mmc/opt/amazon/screen_saver/600×800
(Which is more or less what the uninstall instructions said, so, yay for reading 'till the end?).
Reboot, then refrain from installing something you don't actually understand. (
Hint.).