This compliments the movement of taking Dogzilla's arm to perpendicular and leads to an effortless throw. Crafty sits down into a position where he can punish or armbar. Here, his right knee is spread out to leave a line for his stick to strike. For the armbar, the knees will come together while the hips rise. This throw comes to us from LaCoste Silat.
Many systems have something similar.
The difference is in the footwork. In LaCoste, the thrower seeks to zone behind the throwee, and in Bukti Negara the footwork calls for being stationary while slamming straight down the line of the arm once it is perpendicular, which makes for a very unpleasant, and perhaps damaging impact with the ground.