Andy,

Remember my spin entry tests in the V2b a year and a half ago. One of
the departures was so violent, I lost reference, and even though I knew
which way I entered, I can see how a surprise stall with the same sort
of departure could cause disorientation and application of pro spin
rudder. At low altitudes (during a save, for instance), the delay in
recovery could be very bad news.

As for spin dynamics, it might be interesting to look at airfoil tufts
throughout to see what's going on. Anyone have a link? I think most of
us envision a spin as a straight line down, the aircraft rotating about
this axis. That seems too simple. At any rate, the yaw string should
always be displaced into the direction of spin (or average there if
oscillating). Staying in the spin requires that the inside wing be
producing higher drag (as a result of AOA), and thus the pro-rotation
displacement.

I won't be able to fly until April, but maybe one of you southwestern
types could provide some video of the yaw string through 2 or three
full rotations. We can discuss this ad nauseum, but a few pictures
would make the discussion much more interesting and possibly fruitfull.
Andy, you up for it?