Tools like Cleanwipe have been deemed by Symantec to be "not available publically"...that is, it's not to be posted where people can obtain it without contacting Support.
We do this both because of what Cleanwipe does as well as ensuring that the version being distributed is the current version. Older versions of Cleanwipe have, for example, not fully removed newer versions of the product and caused headaches that could have been spared in the first place had the correct version been used.
Additionally, it wouldn't be difficult at all for a malware writer to package his or her garbage up, name it "cleanwipe.exe" and set it up for people to download. While I've not heard of this happening, it really wouldn't surprise me at all.
If you need Cleanwipe, please contact Support, either via a web case (from your MySupport page) or by calling in.