Uninstalled [WordPress Mobile Pack] but cannot delete themes from folder :(

I tried this plugin out briefly, but since WordPress Mobile Edition worked better I uninstalled it. Although the plugin was uninstalled and deleted successfully, the four themes it installed in my theme directory remained. No amount of chmodding and deletion via FTP and CPANEL worked. Help please! 🙁 I really disliked this plugin and want all traces of it gone from my blog 🙁