While I am still a novice practitioner, I have never hurt my neck doing yoga before. In fact, I am usually really careful to listen to my body while doing yoga because I do it to help my body, not get hurt. I don't know what ouchy signal I missed this time, but my neck is killing me. I think that I won't be doing shoulder stands for long periods of time ( if ever again, if I get my way) until I am at a higher level.
Oh... to be honest, I am extremely annoyed.