Again? This happened in AKL just a few weeks back. Prop auto-feathered at 700 feet, resulting in an over-tourque, engine shut-down.
This is not unheard of for the type. Apparently it is the price you pay for having an auto feather that will 'always work' in the real situation.
AS2A, there is no way to prevent a major over-torque if a prop is feathered at takeoff power. I'm surprised the prop doesn't overtake the aircraft as it departs in such a situation.