Stretchy Leg IK Problem

[tayyki]

Hi all, recently I am tweaking my Character and I notice this problem that I have when I implemented the 'Stretchy' onto the legs.

By the way, I am using Autodesk Maya 2011 and the Stretchy method I have used are the nodes - namely DistanceBetwee, Condition and MultiplyDivide.
Additionally, I have made the inputs to be in the Y.

I have attached a picture of my problem in the thread.

Basically, the problem I have is whenever I have stretch the legs to a limit distance, the thigh joint/skinning will gets distorts in all direction.
I have sort of find a solution but it is not practical, being I have to move my poleVector to the opposite direction so that the distortion will ceased and revert to normal.

Personally I do not find this to be an ideal solution as I find that if say an animator is going to use my rig, this is a big hassle to 'play around' so as to get it normal.

As such, can anyone tells me how to settle this issue?

Image:

I have posted my file for easy viewing.

File

Greatly appreciate for any advices.