That was my thought too. Asymmetric thrust would be pretty darned powerful. I can’t help but wonder if the pilot was exactly doing that and unable to climb as a result of reduced/no power on the left engine + drag from the full deflection on the rudder. Also, if a cable snapped, why wouldn’t the rudder be able to go neutral? How would one cable failing apply force to the remaining cable that would overpower the natural tendency for the rudder to go neutral? And I don’t know on the 310, but depending on how the rudder trim functions, I suspect that would be able to at least maintain a flyable rudder position. It’ll be interesting to see what the NTSB finds.