[Plugin: WordPress Mobile Pack] Plugin desactivation in mobile mode

Hi all,
is there a way to desactivate unusable plugins in mobile mode out of wp_deregister function ?

for example I tried to desactivate SlideDeck plugin using this code in functions.php file :

function site_init(){
	if (!is_admin()) {
		wp_deregister_script('slidedeck-library-js');
	}
}
add_action('init', 'site_init');

The function is executed but SlideDeck plugin is still registered in wp, style present in $GLOBALS[‘wp_scripts’] and style calling the js file.
This make me crazy.

http://ww.wp.xz.cn/extend/plugins/wordpress-mobile-pack/