The desperate eleventh-hour spiking of last-night's 60 Minutes "suicide cluster" story had an interesting lead-up.

Crikey understands that the controversial segment, which was originally set to air on 2 August, was the subject of a high-level tug of war, pitting BeyondBlue chief Jeff Kennett and adolescent psychologist Michael Carr-Gregg against Nine chief David Gyngell.