Hypothetical Scenario #1 - Urgent Action required

Op 6-2-2014 5:19, schreef OneTango:
This is a voluntary pop quiz.

You're circling in a 30 degree left bank at 3000 AGL.

You hear a thunk and the glider enters a spin. Your practiced spin
recovery technique does not work in the usual amount of time. You look
in
the direction of the thunk and see that the left spoiler is full open,
you
confirm that the spoiler control handle is in the fully closed position.
A
quick look confirms that the right spoiler is full closed.

What do you do next? Why did the left spoiler pop open. What just
happened?

To derive the full benefit of this exercise, you might respond to this
thread with your answer before looking at any of the other replies.

My hypothetical solution and explanation follows as the next comment.

Deploy the other spoiler/airbrake. It is unlikely that the ailerons/rudder
will have the authority to counteract the rolling/yawing moment produced by
a single deployment. Normal spin recovery to approach attitude/speed. With
both spoilers deployed you are still flying a glider, I concede that it is
a glider with a crap gliding angle but if you have ever flown a primary you
will be right at home. You can fly a normal circuit (pattern) with the
normal rules for a glide angle that you now have. It may be wise to ensure
that you do not go any further downwind than the boundary of your selected
landing area, depending on length available, but again the normal rules
apply.