The dive brakes on the Brigand opened asymetrically on numerous a/c doing strikes; the sideloads ripped the props off.
This from a gent named Peter Weston who was a WOP on Lancasters during WWII, a nav/rad on Brigands, then a WOP on Sunderlands in Korea. He survived an incredible crash in a Brigand. For that story, google "Peter A. Weston."
Unfortunately, Peter died a few years ago. I had interviewed him for a Beaufighter/Brigand story. Very nice man.