Accelerated spin in unexpected direction at low altitude

Thank you for this. The only time I have been in an over the top spin
was
in one particular 2-32 only from a slip to the left. Allow this
particular
2-32 to get slow in a left slip and over the top you went. Would not do
it
from a slip to the right and I had always been thought that an aircraft
will not stall from a slip. Unfortunately this glider is not with use
any
more and I have not been able to get any other 2-32 to do an over the top
spin entry from a slip.

In the mid 90's while high in Minden wave and test flying a Puchacz
for
a potential club purchase. An investigation of the gliders slip and
slipping
turn characteristics. During a deep left slipping turn the glider
abruptly
broke over the raised right wing into an aggressive right spin. Onlookers
said it appeared very much like a left slipping turn into a right snap
roll
spin entry. Considering that I was at about 1g at the time so there was no
g-loading associated with this event. My assumption was that the raised
wing was blanked and stalled by the associated fuselage/wing turbulence.
I did not attempt to repeat the incident in that or any other Puchacz, so
I
have no idea if that characteristic was typical for make and model or
limited
to that particular glider. It's still remains the most aggressive spin
entry I
have ever experienced in a glider or airplane.
I should add that the club did go ahead and ordered a new Puchacz.
Unfortunately a number of years later during a check flight with the clubs
primary instructor/club president and a new club member/airline pilot,
were
both killed when their Puchacz spun to impact.