Everyone has made good points but I tend to agree with kykaree. I do understand where you are coming from, though. My husband has been awesome. He is my biggest supporter and cheerleader. There have been a couple of times recently when he made a sarcastic comment and it rubbed me the wrong way.
You handled the situation just right. Regardless of the intent of someone else's comments or actions you still have to bite the bullet and do what is right for YOU. And, you know what? It doesn't matter how silly you might of looked doing those moves - they were burning calories all the same. A lot more than sitting on the couch and snickering at someone else would have burned.