[Ken Case]

Sure! In a web browser, go to <http://idisk.mac.com/MYACCOUNT/Documents>, replacing "MYACCOUNT" with your own account name. Log in. You should see your iDisk's Documents folder.

Select "OmniFocus.ofocus", and you should see a little delete icon appear on the right side of the selected row. Click on it, and you'll be asked "Are you sure you want to delete OmniFocus.ofocus and all its contents?" Press "OK".

Hope this helps!