I tried this on my mac with OS 9.2.1 and OSx1.3.1 and it doesnt work.

In OS 9.2.1 I made the file self opening (.sea). I then used stuffit to unstuff the files. Sometimes if formed a stuffit file which was unstuffed by stuffit . Sometimes it formed an application which when unstuffed by stuffit got me back to the Limewire.sit file.