Thats because the rules state that only "Disney" pins can be traded. So that is the "official" trade. But the CM has the final say in all trades. That is another rule. So the CM can in theory trade for the DWT pin. However it is discouraged by the company to do so, because they use the CM's to circulate pins to guests.
Originally Posted by AKQJ10
'Twas the Nightmare Before Christmas and all through the house,
not a creature was peaceful,
not even a mouse,
The stockings all hung by the chimney with care,
When opened that morning would cause such a scare,
The children, nestled all snug in their beds,
would have nightmares of monsters and skeleton heads.