and I just happened to come across this photo to which I added a 270 degree angle. So, for those of you who questioned my math skills when I said that you should be at a 270 degree angle to the opponent's body, here you go, photographic evidence. And yes, it's not EXACTLY 270 degrees but you have to admit that it is pretty damn close.
oh, and by the way, my Ph.D. is in Educational Psychology but my specializations were Applied Statistics and Tests and Measurement, which means I had way more courses like Multivariate Statistics, Log-linear models and Structural Equation Modeling than on things like Curriculum Theory. (I had one course on that - not my cup of tea.) In my "day job" I'm president of a company that does statistical analysis, computer programming for contracted research and evaluation research.