That's the one!
I have to admit that I get a bit nervous when I hear people are doing much C/J and Snatch work at their crossfit affiliate. I've lifted w/ some of the guys that are oly lifting certified by CF and there seems to be a very wide range in quality. Ugly form at light weight and high reps can hurt you, no matter how conditioned you are.
Its probably worth it in terms of long term health care costs to pay for a good coach, rather than a bad coach (or no coach). From what I understand, spine surgery isn't cheap.