a deadhead to atl in a rj(700 or 900 can't remember) this one evening had me pretty worried seating in the back. on the base, the pf threw out the spoilers and flaps, fine he/she is trying to correct for something. but on final with thrust being somewhere around idle all the flaps came down and felt like we were going to stall pretty freaking soon. all of a sudden, the pf pushed the levers pretty far forward. we were flying this way almost to the threshold. for the life of me can't figure out if they forgot the spoilers were out or something i can't figure out.