Damaged Lipo plug?

[Nightshade]

Hi Guys,

I just went to clean my car after last meeting. I picked it out of it's box and there was a little crackle and a puff of smoke from the balance lead of one of my lipo's. It looks like the plastic part of the balance plug has come off during the last race and two of the 3 balance wires were touching each other.

I pulled it straight out of the car and put it outside, then snipped one of the balance wires further down so they were no longer shorting. Do I need to just bin the whole battery? It's a turnigy one where all the wires disappear into the hard case, so they can't be changed. Can I solder a new balance plug on, or use it without balancing and seal the wires somehow? Or should I just bin the whole thing?
I have no idea about lipo's...