I've tried checking for you but I can't figure out quickly how to get a list of command line arguments. Either way, if you want to store your save files/config files elsewhere, it's probably best to make use of symbolic links.
See it as a shortcut folder. You make a folder that redirects/links to an already existing folder. So you can effectively make the game use the default folder for it's config files/save files (%localappdata%\Aspyr\Star Wars The Force Unleashed) while the "Aspyr" folder leads to an entirely different place.
To do so, open Command Prompt as administrator and type "mklink" on how to use it.
Example on how I used it:
mklink /D "C:\Users\Lifell\AppData\Local\Aspyr" "F:\Google Drive\Games\The Force Unleashed"
In my example, I moved the contents of the "Aspyr" folder to the "F:\Google Drive\Games\The Force Unleashed" folder. This was 1 single folder called "Star Wars The Force Unleashed". After that I removed the "Aspyr" folder from my %localappdata% directory and ran the above command in Command Prompt.
This was the result:
symbolic link created for C:\Users\Lifell\AppData\Local\Aspyr <<===>> F:\Google Drive\Games\The Force Unleashed
Just make sure the folder structure is still intact.