How can I remap a stuck key to null?
Try assigning the key to KeyCode::VK_NONE:

&lt;autogen&gt;__KeyToKey__ KeyCode::Z, KeyCode::VK_NONE&lt;/autogen&gt;


See http://pqrs.org/macosx/keyremap4macbook/xml.html.en or http://lri.me/keyremap4macbook.html for more information about using KeyRemap4MacBook.