How Best to Make This Damaged Hype 4s to 3s (pics)

[suicideneil]

You wont even need to change the balance plug or cut it, just remove that last black balance wire as per the picture. The charger will see a 3s pack when its plugged in- the plastic housing is just a plastic housing, it plays no part in the electrical side of things- if it were a cell in the middle of the pack, then you'd need to get a new balance plug for the pack.. its merely cosmetics in this instance