[Plugin: Page Specific CSS/JS] removing plugin

I would like to know where the plugin adds its code, so that i can manually remove it. I tried out the plugin, but it didnt accomplish what I wanted. I then deactivated, uninstalled and removed the files, but a few of my pages are still messed and pulling the wrong css. I tried looking in the Css file and also the pages php files but they look ok to me. Where does the plugin add its code?