Hi Mark,
1. What appeared as my HGA appeared in front of me, but at the same time, there was another creature very similar to my lower guardian that circled me clockwise with a very stern and serious look (not sure if this was my lower guardian but a different aspect of it perhaps)?
It is always possible that unexpected things happen. A good approach is usually to ask the authority of the temple section for advice, or ask what the meaning behind this is. Especially in the beginning, however, when the thought for of your inner temple is not too strong yet, you might not want to explore every curious event in detail. It is important that you build the thought form of the inner temple in its archetypal structure. It could be an option to ignore strange influences for a moment and just clearly visualize your Holy Guardian Angle and the Inner Sanctum. If these other things are really important, you might want to trust that they will reappear in another meditation. When you have established a relationship with your HGA, you can always ask for his advice when such things happen in the Sanctum - just as you can ask your Guardian Animal when strange things happen in the garden or outside the temple wall. So it is important to first strengthen the archetypal elements of the temple and not to dive too deep into side plots.
2. The appearance of what I am presuming was my HGA resulted in a very physical emotional experience. Something similar to being awestruck mixed with fear. It was very intense and almost forced me to stop the meditation. Is that what one would expect as a typical response?
I have experienced the feeling of great awe in that situation many times. I would say thats perfectly fine. You might want to ask yourself what you are afraid of.
3. I noticed that in the Kali experience as well as this most recent experience, I had an animal circling me in a clockwise direction both times. I don't know of any references for this kind of imagery. Do you have any suggestions as to what this kind of imagery might suggest?
If it appears again, you might want to ask the animal why it is there and what lesson it has to teach. It might also just be a distraction. Hard to say for me.
4. Last question :) Is there a way to tell when ego is influencing the temple meditation? I ask as I am concerned that I may be experiencing some things that are purely ego driven rather than spiritually inspired / derived.
That is indeed a good question. As Nalinie pointed out, it is possible to develop a strong inner discernment, which will come with practice. Often when you think you might be ego driven it might be enough to ask yourself: "Is this my ego?". Take good note of such meditations. Even if you are unsure, you will be able to have clearer view on the issue when a few days have past.
Thanks again for all your advice, it's extremely helpful :)
You are very welcome! Its always a pleasure to support people with a healthy learning attitude. Were happy to hear that we could help you out! It is good that you ask this things. I can see how such experiences can be puzzling in the beginning, especially when you have no personal mentor. So don't hesitate to ask.
L.V.X