That is a sad and horrific story and I wish the unfortunate victim all the best.
Like many model fliers, I carry a few scars from encounters with the little devil engines. Now in model world, there is a device called a "chicken stick" which you can use to flick a prop instead of putting you finger in the arc of the prop. I was wondering if there is a full size equivalent? I would be scared stiff of hand cranking a Rotax three blader, although I understand there is a recommended technique.
I confess at times I push and pull my Rotax powered plane out of the hangar by the prop, but never rotating it. Maybe a simple wooden grabbers would be easily knocked up, what do you think, would it be worth it? It could for instance incorporate a torque limiting device, even one as simple as a shear pin.