It was a light bomber converted to other used not designed for high G fighter type turns, every crash at an air show is by a highly skilled pilot. A lot of pilots were lost in that era "beating" things up.How do you know what it was or was not designed to do and whether or not it was a result of failure of the laminate? this was a very experienced pilot who had far more experience flying this type than yourself—a fighter aircraft designed for violent manoeuvres. 77 years after the incident, we have no more information than would have been available to the "Court of Inquiry" of the incident.
Jim