At the conclusion of an aerobatic sequence, the pilot positioned the aircraft for a landing on the grass flight strip. At the time, there was a crosswind of about 8 knots with occasional gusts. Towards the end of the landing roll the aircraft groundlooped and the left maingear collapsed. The pilot stated that he did not believe the aircraft could groundloop at such a slow speed and was therefore not ready when the aircraft weathercocked. He did not attempt to apply full power, which is the recommended procedure in this aircraft, to correct such a swing.
