I doubt many professional personal trainers would have recommended someone do the routine that caused you an injury. Working out is kind of intended to do the e

I doubt many professional personal trainers would have recommended someone do the routine that caused you an injury. Working out is kind of intended to do the exact opposite - I'm surprised you do not hold place more responsibility for the injury on the instructor. If, after some kind of initial evaluation, they encouraged you to do something you couldn't actually safely do, I think the fault lies more in the crossfit trainer than yourself.