I read this, too, and was going to post the article, but Davy beat me to it ! I would guess that , even thought they said it died trying to escape out of the fishermans net, I think that he was probably beating it and trying to kill it , too.
I am sure he would have been furious to come out and find his day's catch being eaten by this monster fish, and since he didn't even know it was a protected species; he probably just wanted to kill it and salvage what was left of the fish he was hoping to sell at the market.
That old truck is seriously amazing, itself ! There is not much to it actually, and it looks like what is there was pretty much put together by the fisherman.
Most interesting story ! !