I've had some issues with Spine-Unity Ragdolls before, but have waited until Spine 3 was released, with its various scale changes before revisiting my issues.
I'm not using SkeletonUtility, because as I understand this is not yet supported. My manner of flipping is just setting the localscale of the object to -1.
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As you can see, the rotations are off, and appear to disconnect the limbs from the body.
Here's a mid-flight screenshot:
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What do I need to do to get Ragdolls working with Spine 3, and the latest runtime?