I'm a little suspicious about the fact that it was given to the boy recently, and that the pro-search people had an instant "see? This proves we have to search more" type of reaction. They found it suspicious that there was a hole in the teddy. Are they going to rip open everyone's teddy that has a hole in it? I'll tell my girlfriend to keep the Gunndgame teddy at home.
Of all guns, a Derringer would indeed hve been the most likely to go off accidentally. And it was shoved in a toy and given to a child to play with. Interesting.
It could have been many different desired end results, but this smells a heck of a lot like an anti-gun ploy, along the same lines as loading guns at gun shows.
And I usually don't dig conspiracy theories.