Ok, so comment out this line as you did:
{if $main ne "catalog" or $current_category.category ne ""}
But the closing one is down near the spacer. So replace this:
{/if}
<img src="{$ImagesDir}/spacer.gif" width="180" height="1" alt="" />
with this:
{* /if *}
<img src="{$ImagesDir}/spacer.gif" width="180" height="1" alt="" />