Sorry if someone has talked about this, but when i looked at the secret ending, i noticed that the knight who picks up rikus Road to Dawn keyblade, has a keyblade in the other hand that is being held backwards. you can kinda see it as the knight pulls the RTD keyblade out of the ground. i apolagize if this thread is stupid.
link to secret ending: http://www.youtube.com/watch?v=g9uoAIq0LxU&search=Kingdom%20Hearts%202%20Ending
link to secret ending: http://www.youtube.com/watch?v=g9uoAIq0LxU&search=Kingdom%20Hearts%202%20Ending