I would gather some additional background material to replace the areas obscured by the statue. Just shoot from the other side of it, with your camera on the same axis, toward the building. That becomes your background layer. Then carve out the statue as a foreground layer–with and without the figures. Here’s where your Photoshop skills come in. If you want to do a slight move, you might try the “Kid Stays in the Picture” effect (Google that), although it won’t work very convincingly with the geometric shape of the statue pedestal. Beyond this basically locked shot approach, the rotoscoping becomes much more complicated.