Here it is nine months later, and a new need was born. (get the pun?) I looked for quite a while before I found this helpful thread on how to avoid the_content and it's filering out anything past the more comment. Mucho handy!
In case anyone cares, I'm actually using the more comment to display a partial post in the sidebar, but I want the full post in the actual category display. Which post displays in the sidebar is controlled partially outside the wordpress system by a program schedule database for an online radio program. In short, the schedule database has a url for the show info, which is a wordpress post. I have a function in wordpress that reads the show database, uses the url there that is the show currently playing, parses out the nedessary data to get the post ID, and then queries to display that show in the sidebar. I only want everything up to the more comment, including any images, in the sidebar. In the show category, I want the full post. The above code snippet was what I was looking for. Thanks!