No, they're not statues. They are 3D models that are being rendered in real-time. They will probably be animated in future games. If you look at this pic:
You can see the '?' dude from the first AR game. In first AR game, he is completely animated. However, in this mode, he's not. Like I mentioned earlier, they probably didn't use animation in this mode because it's solely for taking pictures and will make it easier to take pictures of them in various poses and place them exactly how you like in the picture.
However, I am very disappointed with the Samus model because the sheen effect looks seriously fucked up.
@Simbabbad Yeah in the recent NWR podcast the guy is talking about how he was playing Face Raiders and scanning in faces that he had laying around in print, I forget his examples. Anyway, someone suggested that you could scan things besides faces, there was a very long pause, some awkward laughter and... I think we all know what they were thinking about.