Simple piece of code to remove footer widgets from your site EXCEPT for on your Front Page - effective only if you're using a page template as your front page... If your homepage shows your list of latest posts, exchange is_front_page() for is_home() //Genesis 2.0 hooks used.

genesis-conditional-remove-footer-widgets.php

<?php 

add_action( 'genesis_before', 'your_prefix_conditional_footer_widgets' );
/**
 * Remove Footer Widgets excepting the home page
 *
 * @author Dee Teal
 * @link http://thewebprincess.com/
 */
function your_prefix_conditional_footer_widgets() {
	if( is_front_page() )
	return;
	remove_action( 'genesis_before_footer', 'genesis_footer_widget_areas' );
}