This was posted by Stretch on hackingt0sh....
"If that is happening, open the /private/var/root/Library/Installer/LocalPackages.plist
and remove everything including the opening and closing dict tags where you will find: <string>com.apptapp.SummerBoard</string> after that you can install summerboard, provided you have the 1.1.2 entry mentioned BELOW. You can then install summerboard if the uninstall was not working before"
If you get stuck let me know, but backup your old ones before you do anything