aerodoug,
That reaction only occurs with these if you did not put a swivel in the line and therefore a portion of the torque applied by the device may reach the crane/aircraft. There are two methods for creating a torque at a suspended load independently of the carrying machine that have been used in prototypes. The simpler and safer of the two is being developed at the moment.
[An associate company has also been work with helicopter-suspended instrumentation during the same period. Again, simple wins. I love the one about sticking a branch in the side of the load and their eventual solution ends up being a little bit like a built-in branch.]