Permanently Paused Torrents in rTorrent

I've been using rtorrent for about a year, and every so often I'd get a torrent that would load, but would then immediately pause and not start. After a lot of googling and clues from irc I finally figured it out. I haven't ever had this issue on what, only elsewhere.

The Problem
A .torrent loaded into rtorrent pauses immediately and will not start.

The Cause
Resume information is included in the .torrent when created, and this remains in the copy downloaded from the site. This information interferes with the session directory resume functions somehow.

The Solution
Remove this resume data from the .torrent

• Use the bencode editor from utorrent found here to open up the .torrent file
• Select the libtorrent_resume group, and delete it with the red minus sign
• Save the file from the menu
• That's it. The file can now be loaded into rtorrent and will behave properly

Notes

• This doesn't appear to be the same problem as the one that is solved by killing the torrent and restarting it with ctrl+k, because that didn't work for me.
• I would appreciate any information that can fill in the missing details here, for instance about session directory and how it affects this problem, and also what the uploader is doing to create this problem in the first place.
• I'm not sure what log_callback does - it's not in most of my other torrents, but it still works if I don't delete it.