It's quite easy to explain, because the YZ didn't come with a kick stand there was nowhere to place a pine cone discreetly, so DJ has had to improvise, and improvise he has, if you look just to the right of the bike in the first photo you will see a strategically placed "Pine cone" under the throttle tube.......a f%^&$en big van, this is an excellent subsitute and worthy of a mention in the "pine cone placement" quartely.
For those of you scratching your head thinking WTF, I refer you to the cover of VMX mag number 25 and subsiquent ktm 250 article, special atention should be drawn to the kick stand of said motorcycle.