Hinge Joint with Negative Scale

Hi all,

Trying to simulate the effects of a ragdoll on a 2D character, using Hinge Joints. Works fine / as expected when the player is scaled positively, but to turn the player I'm flipping the scale value from positive to negative (unfortunately, this seems to be the best way to handle it in this circumstance).

However, when the scale is negative the hinge joints start flipping out and basically explode off screen. Is there any way around this or am I being particularly stupid today?

Any suggestions are greatly appreciated,

Matt