RE: LiPo battery low voltage
I don't think anyone has said to try and restore a pack that was damaged. Oh course that's a bad idea. It's been said if the pack is physically damaged then throw it away. Same if it's internally shorted.
The method has worked for me ....safely and I'll continue to do it if I stupidly leave my transmitter on again or get a plane stuck for several hours.
If the OP or anyone else doesn't feel comfortable doing this then by all means don't try it and just disable and toss the battery.