We have been shown that the human soul exists as consciousness that is an extension of Creator’s consciousness. Is this true and what are the implications for our purpose and destiny?

This is entirely true and we, as well, applaud you for this insight of yours. The existence of the soul as consciousness is another way of pointing out the profound nature of consciousness and the vast potential it represents and why it is the ultimate energy source of the universe, and all that is the soul, in consisting of consciousness, has within it all it needs to manifest anything it desires. And, in that sense, it is a mini-creator. In the same way that we create the universe, you create your existence and you can give rise to your own creations. And this, when you are in light-being mode, can be quite profound and quite unique. This is being done by light beings all the time, and you do this in between incarnations quite readily and much, much less so when you are incarnated as a physical human; with the limitations imposed on the human in physical form because of your entanglements with the subjugation that has been imposed on you by the dark spirits and extraterrestrials both.