It turned out to be a trap that could be easily unlatched with one bare hands.
The wolf was clearly exhausted and was panting the entire time the hunters were there (as you can imagine, he was probably in a lot of pain too). After discussing the options for about an hour, a plan was made.
The wooden board was used to help block the animal from the man’s legs (the hunter took his time getting close, trying not to spook the wolf).