I have taken the cell apart, here are some pics.
There was a strong sweet smell from the liquid inside ,this soon evaporated.
You can see where the cell was originally punctured the cathode/anode has started to degrade. there were about 60 layers altogether.
Hard to see what might have been out of alignment, without a reference to compare to. I did notice on some of the others what appears to be loose bits of tape, trapped under the case, causing an uneven surface. This might cause problems when they are all under compression in a large pack, causing them to be rejects.
All photos here https://www.dropbox.com/sh/kmnlhfj21ibb22i/Ip4onBU4xq