dvcochran
Grandmaster
Full disclosure: I have no Tai Chi experience but some Kung Fu experience.I have been attending a Tai Chi class twice a week at the local senior center, lead by a very good instructor, whose agenda is based on the health aspects only. Every now and then, he will describe a martial application, but, due to the guidelines. I don't have a problem with this, but some of his students actually want to see some basic techniques, while a few have no interest at learning the so called "dark side"of Tai Chi,as one of them put it. After class, a few weeks ago,a couple of my classmates approached me, and we set up a time to work outside the class room. They knew that I had been training for ages, and even though I never claimed to be an expert, and will be a perpetual student with what time I have left, I started to show some basic applications to them, just to help them understand what can be done with and in between the postures. I am not wanting undermine our instructor by any means, so am I wrong to show them a glimpse of the so called "dark side" ?
To me, your question lies more in the social contract you have with the current instructor and the interpretation from the people you are teaching.
Be forthright and talk to the other instructor and let him/her know what you are doing. Don't invite friction.
Also be forthright with what you are showing folks. Make certain they understand what it is Not just as much as what it is.