Unfortunately, it is a necessity. While I'm sure the animal was not humanely euthanized, the end result is the same. I couldn't personally harm these animals, but it has to be done. It's not like you can find a 20' wild Burmese a safe home when you have CB "docile" Burms all over the US that are unable to find homes.
I do believe all of them should be humanely "destroyed", instead of letting people torture them for trophy purposes.
Just my opinion though.