Actually, it is you that have the bizarre idea. BSD licences do not permit people relicensing code without permission of the copyright holder. Copyright licences cannot do so. No copyright licence could do this.

To do this, the actual copyright ownership has to be transferred. A copyright licence is a grant of permission by a copyright owner who retains that ownership. It is not a transfer of ownership.

* http://uscode.house.gov/view.xhtml?path=/prelim@title17/chap...