The report states that the trim was to the left at initial impact due to witness marks on the trim tab. That sounds quite definitive and goes to the extent of discussing the abrasive surface that it came in contact with.
It feels like a long bow to draw to suggest that the cable pulled full left trim during the impact sequence as you’d have to think that it would be tearing out of the trim actuator so damn fast it would likely jam up or go past the stop or at least bend something in the process.
Remember that the report says that they started looking at the trim mechanism because a witness saw the aircraft yawing significantly to the left.