Some people have good memories! The instructor pilot in question was a good friend of mine & had been an ex RN QHI since about 1966. The puma was indeed on climb out when the incident happened. I was told that it was highly likely that the smoke had made them pass out or at least made it impossible for them to take corrective action plus they landed hard on a cross slope which probably caused the roll over.
As said numerous times after LDP or CDP, land quickly.