1. The launcher has a gas relief port on the right side. When firing from the right shoulder, vents away from you. Fire one from the left shoulder, jet of gas goes into your neck.
2. Yep- it is a rocket. However, the exhaust ports for he rocket motor are not at the rear of the round, but forward, right behind the warhead. Fins are on the back. Because of that, the RPG steers INTO a crosswind. If wind is right to left, your point of aim is to the LEFT of target. Wind will turn it back towards the target.
Most folks that have seen a round for the RPG see it before it is fired. Fins are not visible, unfold in flight.