Bikram yoga in and of itself is pretty rigid... considering that yoga's supposed to be a fluid and spiritualistic practice.
I'm not saying all Bikram yoga instructors are expected to behave this way, but when I read about a program that is ever and always the exact same thing every single time, it doesn't sound like it promotes an atmosphere of flexibility (and I'm not talking about physical flexibility).
Long and short of it, however, if you feel uncomfortable, then you can choose to go elsewhere. There are many people who probably really enjoy that kind of control, but it doesn't sound like it's a good fit for you.
I personally wouldn't care to attend a class where I feel continually judged and am being told by the instructor "Don't say you learned from me because you'll make me look bad!" That's pretty poor manners.
Original weight in 2002: 220
Original weight when joining Spark 1/8/06: 149
| current weight: 131.0