By soft-link, are you referring to functionality specific to NTFS
(symlinks or however)?
Or is there chance you mean regular old .lnk shortcut files? /IF/ this
latter (standard shortcuts), then:
http://www.clonespy.com/english/
You set the options to where it will make a shortcut left behind in the
source where it deletes dupes.
http://www.redshift.com/~omega/clips/clonespy/options.png
http://www.redshift.com/~omega/clips/clonespy/Shortcuts.htm
Incidentally, for that screenshot, I've also enabled the option of moving
dupes to a temporary third folder. I really liked how that option was named
in the earlier versions of Clonespy: "Chicken Delete."