Does anyone see this expression in a Soldiers eyes when you correct a Soldier with the upmost TACT?

I tend to experience this look when correcting enlisted service members that outrank me.
Example: I was in the auditorium with my Soldiers as they were practicing for their ceremony, when I saw a female CSM walk in with her PTs wearing a pony tail. I immediately stopped what I was doing and walked over to her. I stood at parade rest and addressed her while using the greeting of the day. I extended my hand with a smile and introduced myself. I told her the reason why I approached her was because I noticed that she was wearing a pony tail in PTs while not conducting PT in accordance with AR 670-1. When I told her this, I made sure to lower my voice as to not let anyone know what I had said. Her response was, "Well I walk back and forth from my car all the time and between buildings all the time. I think you need to relook at that regulation again there SFC." I asked, "Are you sure CSM? I do recall the regulation saying that the pony tail is only authorized while conducting PT." She responded, "SFC you need to look at that regulation again." At this time I realized that she was now aggitated and didn't care about what the regulation said, so I thanked her for her time and to have a great day. I about faced and moved out. The funny thing is that immediately after that, a couple of my Soldiers even said something to me about her pony tail and I simply said, "See Soldier, that is an example of what not to do."

I feel as if Seniors have the "do as I say, not as I do" mentality far worse than junior Soldiers with the "I do what I want" mentality. That's just my experience.

Not a physical expression but you can see it in there eyes.

Good question leading to one's questioning of their leadership methods and techniques.
I've not seen outright rage, but absolutely inappropriate expressions as well as "silent insolence". Reagarding an effective method to deal with these problems, I agree with SSG James J. Palmer IV; an on the spot correction produces the best results as it deals with the issue directly in time with the occurence, uses a combination of teaching , coaching and mentoring and if the Soldier is smart enough, he/she will recognize that you as a leader actually care about their development. Also, it fits in well with the maxim of "Praise publiclly, admonish privately".