heres a nice read on dutch roll
http://www.av8n.com/how/htm/equilib.html#sec-dutch-roll
sorry bout that wing doesn't stall when it goes up, but the wing does go up and down, i was thinking about stalling in a turn where the higher wing stalls and drops ^^
well the book does say for instance if the crit engine fail causes a yaw to the left, conventional or not thats just an example, a crosswind from the left will help balance a yaw to left no?