you probably loose a bit of stability causing the nose to pitch down as in 1, but it's not propwash, it's the pressure differences on each side caused by the turn, however it'd probably just flap about until you land, that is if you level out and slow down in time.
depends on how big the rudder is i guess and your speed at the time.
The rudder is only one part of the stability, you still have the fin and the rudder will want to follow that all be it with a bit of wobble, it's unlikely that vibration would be enough to make much difference to the planes heading.
so lets here what happened next