The way you've chosen to handle the selective editing is the best way to go as far as this viewer is concerned. Rough language is a better adrenaline release than losing one's temper, but it's gone in a fleeting moment and no one else is interested in wathching the spectacle.

They do have prop shaft cutters for cutting entangled lines. Going over the side is the only way I know of to disengage from a rudder snag. I've cruised the coast of New England (Massachusetts & Maine & the Canadian Maritimes) a couple of times and they make their living setting pots out on floats for both crabs and lobsters. They are so prolific in places, I don't see how the lobstermen keep them untangled! There are about 4 floats on both sides of the boat within 30' distance of the boat all around! My only complaint is that the Intra Coastal Waterway is marked there and they are required to stay out of it, but pay no attention to that. Some of those cages are large and heavy and can bend a prop shaft if it tries winding it up off the bottom.

You should have a plan for Orca attacks as well. If you decide to go over the side with your knife, take a camera. I want to see THAT! I would turn the engine on and try to outrun them at speed or tire them trying to keep up. If they aren't savvy to a spinning prop they soon will be and a damaged orca is better than a damaged (or sunk) boat. Maybe the others will spread the word and do everyone else a favor in spreading the word to other orcas. I plan to carry a few cherry bombs to toss over the sideto scare them off. If I see them approaching I will turn off my depth sounder in case the sonar is bothering them.