Wrong. WotC have not given away the copyright, whether for free or not. Giving away copies of a work does not constitute giving away the copyright. The right to distribute those copies remains with the copyright owner. The OP does not have permission to redistribute the material.
By claiming the right to distribute the material himself, he is attempting to seize the copyright. It isn't his. He has stolen it.
But, it's not my problem if you don't understand that.
Copyright isn't a thing, an object, its a social construct.