Steve
Mostly Harmless
Alright. Rereading the original thread and turning off my BS meter, thinking about this as a pure hypothetical. There are a couple of things I would have done differently. First, if the goal is to actually have the other guy calm down, telling him he should calm down is usually going to have the reverse effect.
Second, taking the call in the parking lot during and after class seems pretty unprofessional and probably didn't help the situation, particularly as a guest instructor. I am having a hard time envisioning a class of four kids running the end of their class on their own and bowing themselves out. That just doesn't make sense. But even in an adults class, as a guest instructor, I think you need to be present in the class or risk losing control of it.
Otherwise, it's good that you remained polite and calm. That's always a good idea.
Second, taking the call in the parking lot during and after class seems pretty unprofessional and probably didn't help the situation, particularly as a guest instructor. I am having a hard time envisioning a class of four kids running the end of their class on their own and bowing themselves out. That just doesn't make sense. But even in an adults class, as a guest instructor, I think you need to be present in the class or risk losing control of it.
Otherwise, it's good that you remained polite and calm. That's always a good idea.