Went for a Karma yoga class only once. It was nice...

Went for a Karma yoga class only once. It was nice to see many other male yoga practitioners, the male owner seemed sincerely interested in helping others explore their practice, and I did not feel unwelcome as a stranger in spite of looking like an odd sort of fellow in my bibs. However, I gotta say I had the most bizarre moment with a female instructor who seemed to attack me while the class was in happy baby for an extended period of time. I got bored so I stretched my shoulders by grabbing my feet and straightening my legs. The woman lept at me and pushed my feet down in what appeared to be an annoyed frustrated panic. I locked my legs in confusion. I think I was even closing my eyes till she tried to jam my feet down. I don't know. Maybe they don't allow the students to make adjustments or play around at all. Maybe the students aren't aware there are different styles of practice and deviation is seen as error necessarily. Maybe I just had an odd moment. I'd go back if I was in the area. It was a karma yoga class. Why so serious?