Mine had disappeared when I made the original post back in August, but it returned with the 2.2 upgrade on the Droid X. Like I stated before, the app was always on the phone cause if I opened a xls file with any file manager and it would open with QuiceOffice. It just wasn't in the app drawer.
After the 2.2 upgrade, it returned to the app drawer. The 1st time I went into it, it asked me to sign in using my gmail account ID (I think).