jeas! i get goose bumps with such a story. people don't realize that hte tail containsspinal nerves. this is often the case when a dog is docked at a later age. docking should only be done with in th first 3 days after birth. this is when the nervessystem isn't developed propely yet. the chance that ther becomes damage in the nervessystem is minimal. dogs that are docked at a later stage often have a lot of problems and pain in the docked area. this also why docking is forbidden in the netherlands!
i hope you puppy will recover. it's really sad that hte pup has to live the conciquences...........