Hi,
Just to be clear, wp_footer() only loads scripts in the footer. It doesn’t actually display the blog footer – that’s done by get_footer() instead.
Were you thinking of get_footer()?
If that’s not the problem and you really can’t call wp_footer(), then you could possibly just trigger action ‘wp_print_footer_scripts’ instead, e.g. do_action(‘wp_print_footer_scripts’). That calls the internal function to queue all the scripts.