I think we've discussed math anxiety in teachers before. Some articles of note:

http://stemwire.org/2013/05/31/math-anxiety-doesnt-just-affect-students/

PNAS article on teacher-transmitted math anxiety:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2836676/

Abstract of Rachel McAnallen dissertation (in gifted ed) cited in first article, regarding teacher experiences with math and math anxiety:

http://gradworks.umi.com/34/64/3464333.html

Personally, I have no more of an issue with CC math than with many other frameworks, but I do think that it generally has been implemented poorly, especially at the level of teacher retraining. The teachers I know who like it and find success with it, anecdotally, have been those who are divergent thinkers themselves, and are not afraid to try new things, to fail, and to play with the curriculum. (Of course, one suspects these teachers would be effective with any curriculum!)

...pronounced like the long vowel and first letter of the alphabet...