WPNYC.ORG / BuddyPress: Redirect to forum on Group home page

bp-custom.php

<?php
/**
 * Redirect to forum on Group home page
 *
 * http://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/changing-group-tab-display-defaults/?topic_page=2&num=15
 */
function sfire_redirect_to_forum() {
	global $bp;

	$path = clean_url( $_SERVER['REQUEST_URI'] );

	$path = apply_filters( 'bp_uri', $path );

	if ( bp_is_group_home() && $bp->current_action == $bp->bp_options_nav['groups']['home']['slug'] )
		bp_core_redirect( apply_filters( 'bp_uri', $bp->bp_options_nav['groups']['forum']['link']) );
}
add_action( 'bp_init', 'sfire_redirect_to_forum' );
?>

Something about this breaks the ability to post updates in a group's activity stream. Any advice? Thanks for the snippet.