When I used to fly the Libele (standard 15m glider) the airbrakes where only on the top suface and to all intents where useless so a side slip approuch was the only way to get it down on the strip, but you are right its rudder to counteract the bank with applied ailerons into wind, long time since I flew full size it becomes instinctive once you have flow that way for a long time, sorry if I mislead anyone.

Using full rudder in the opposite direction to the spin is to accelerate the stalled wing and unstall it, never found it neccesary to apply the down elevator that is recommended to stop the spin after applying rudder as everything I flew came out of the spin immediatly you applied the rudder.

Agree with KC its one of the most fun things to do.

Mike