Zephyros
That is a very earth based interpretation for a ( fire ) wand .
I agree. The ceremony mentioned doesn't seem to have any overt connection to the card, neither does the idea of illusion. Indeed the whole concept of "material" doesn't seem relevant here, this being a card of Wands.
To me the ring is part of the battlements, whether it can be removed or not is immaterial. It would represent the general Will, which is the basis of the specific Will which is wielded by the man. Dominion suggests power that is not exercised, but it merely held, as per the globe in the figure's hand.
Indeed this even fits Kabbalistically, as Chochma is a reflection of Keter, but with the added element of force (which in the Wands would translate as "force forcing" ). All of the power of the man is drawn from the general idea of force, but that force has only now recognized itself, as it were, looking at itself in the mirror. The general Will is immobile, and cannot be modified by the specific Will. By necessity Wands are somewhat abstract, and this is one of the most abstract, being at the very top of the Tree, with only the Fool and Ace of Wands coming before it.