Due to not looking for ‘trim_tool 2.0’, it seems that it became available on r4ds.com the day after Kernel v1.11 was released.
It’s only a small file of around 24KB and is easy to use, it’s just a matter of running the program, locating the file to be trimmed and setting the output filename, that’s it.
I’ve uploaded a zipped version to my box.net R4DS folder for anyone that needs it. If you would prefer to download the rar file from the official R4DS site, then here is the link as provided by Jeremy in a comment.
*Gah, posted using Opera again, edited in Firefox to show post properly*