<font face="Verdana, Arial" size="2">Third, in my opinion, and again I meen no disrespect, it would take a great deal of practice to generate enough jing to push ONE person back WITH contact. I am sorry, but I just feel the concept of trying to push back a full line of people with out any contact, with no practice in chi/jing transfer as ludicruce!</font>
In studying Taijiquan, I think it is important to know when to trust your teacher and not yourself; however, I also think it is important to know when to trust yourself and not your teacher. From what you describe, I would trust your instincts about what you are seeing.
<font face="Verdana, Arial" size="2">Second, a lot of us, (especially me probably) are yet to feel the sensation of chi, and as far as I am aware, none of them know what jing is, admitedly, I am a newby with this concept.</font>
I think the issue is not with your sensitivity, but with your knowledge or your teacher's knowledge. Although many of my fellow posters seem to disagree with me, I think Qi is a very ordinary thing, like "rooting" or "balance."
For me, talking about Qi is like talking about the night sky. Although some aspects of Qi theory and astronomy are extraordinarily complex, this does not mean that Qi or the sky are mysterious in and of themselves; nor are they only for experts to consider.
Some approaches to Taijiquan focus heavily on Qi, but many do not, treating Qi circulation almost as one does blood circulation or respiration. You do not need to be a yoga adept in order to breathe deeply or a Qi Gong master to sink your Qi.
If you do not know how to sink your Qi, I would assert it is merely because you have not yet found someone who could give you a five to fifteen minute lesson on how to do so.