Wake Turbulences

I just happen to look at my plane from outside when encountering a wake turbulence, and i noticed that the rudder locked in an extreme position until i moved the controls.It is fine by me to use the control surfaces to simulate such turbulence, but rather then locking them (the surfaces) in some extreme position, i'd rather shake them; heavier when turbulences are heavier.This little joke made me crash when i was in a copter: made me make a 1440