Here's a comment from a friend of a FB friend:

Yes, and... while this extreme complication of overtraining is comparitively rare, CrossFit's dirty *big* secret is simply that they're encouraging *ghastly* technique in lifts that are unsuitable and dangerous for many of their clients. Like almost all trainers, under the guise of "changing things up" they manage to avoid establishing baselines in standard exercises -- which in turn prevents their customers from realizing that they've actually plateaued out, or are getting weaker, in spite of the fact that they feel beat to ratshit every morning. Having been a competitive power- and Olympic lifter, I see CrossFit-influenced people in the gym every day, deadlifting with rounded backs and doing knock-kneed power cleans; doing all kinds of partial range bullshit, desperate to use a heavy weight they're nowhere near strong enough to lift properly or completely. If I could send one message to these people, it would be this: Every world class athlete trains at the same basic exercises for their sport, every day or two, for their entire careers. If they mix things up, it's for a tiny percentage of their workout. If your trainer is contantly changing things up, no matter what they tell you, you're not training "like the pros". Every world class athlete trains with strict, perfect form. Adding 10 pounds or getting another few reps doesn't count if you have to throw form out to do it. Get on YouTube and watch Olympic weightlifters -- even setting WRs, their form is perfect. Message: It's not "practice makes perfect", it's "perfect practice makes perfect". Next rant will be, trainers on steroids training customers who aren't...
BTW, it was members of the women's lacrosse team who got rhabdomyolysis last year, and several members of another college team the year before.