Here is how to uninstall this mod step by step.
Step One: Download the file- Restore.rar
Step Two: Extract the file- Restore.rar
Step Three: Double click on Restore.exe
Step Four: Go though the restore process.
Step Five: Go to your San Andreas Directory and look for a folder called: X Island and either delete it or put it back in the download folder.
Step Six: If you were usuing another MAIN.SCM and other SCRIPT.IMG Files that were modded, I suggest you replace them again becaue the files that are in your gta directory now after you ran the restore.exe are the game's orignal files.
Step Seven: That's it! Just run your game!