I'm curious if there's a method to output an excerpt from the publish txt right into a sidebar, only the sidebar for your publish.

Things I have attempted is applying the get_content loop within the single.php right into a custom sibar which i have produced inside another DIV, however it shows the publish txt, Comments and pictures within the sidebar.

 <div id="Sidebar">
   <?php the_content(); ?>
 </div>

Question: Can there be anyway to show Publish text within the sidebar?

You could do this this:

<div id="sidebar">
    <?php 
       the_content();

       //display only on post page 
       if(is_single()){
          the_excerpt();           
       }
</div>

Hope that actually works!