This is a suggestion for the developers. Have the plugin remove the glut of rewrite rules it adds to the database, when the plugin is uninstalled.
I already had a page called 'Events', before I started testing out this plugin. It automatically took over this page and when I uninstalled it, the page was completely hosed (showing the homepage content, instead of my Events page content).
I had to go into PHPmyAdmin, find the rewrite rules and remove the block of rules it added manually.