Hmm!. With two spin accidents in Australia, now this one plus the one in Europe with the test pilot this is not a good look for the type.
When one looks at the design of the tail plane one can see that the airflow in a spin might well have the rudder blanked off to reduce or stop the air flow needed for recovery.
Do I understand that the Australian CASA is working with the local CAA for an exchange of information re the spin handling of the Bristell?