Got around to doing it today. I couldn't desolder the Deans and the extra receiver wire -- I don't know if the battery was acting like a giant heatsink, but my trusty 850W soldering iron just could not get the solder to liquify. In any case, I just cut them off at the solder point and taped the battery back up.

I couldn't find a good heatshrink wrap -- the one I had was almost like vinyl and way too thick/big, so I just wrapped it in electrical tape and I think it's actually pretty good now.

Thanks for the help guys!