Just a little remark regarding the spoilers on the DH8 series. As has been mentioned, on the DH8-400 they have two functions: as lift dumpers when WOW is sensed and the throttles are below a certain angle, and also as augmentors to the ailerons (a little side note: they are connected to the L/H yoke while the R/H side has the ailerons; normally they are mechanically connected below the control columns but can be disconnected in case of a control jam). The ground/flight switch has been mentioned as well. From the pictures, it seems to me however, that the aircraft involved here is a -300 series, and here things are a bit different. The spoilers do not work as lift dumpers on this series; they are only used as aileron supplements. So the asymmetric position might well result from the pilots attempt to keep the wings level as long as possible via the aileron.