Hi,
You will need to open a case with Support to get the CleanWipe tool.
Online- https://mysupport.symantec.com/login.html
How to update a support case and upload diagnostic files with MySupport
http://www.symantec.com/docs/TECH71023
QuickStart Guide - Create and Manage Support Cases in SymWISE
http://www.symantec.com/docs/HOWTO31132
OR
Call Support team
Phone - http://www.symantec.com/business/support/contact_techsupp_static.jsp