Thank you for sharing the importance and knowledge on enthronement so that we learn how to consecrates statues, images as well as to request Dorje Shugden to stay and to bless a location.
From the enthronement prayer, Dorje Shugden is
1. A fully enlightened monarch and the protector deity who bestows all common and uncommon attainments.
2. Embodying the three refuges – Buddha, Dharma and Sangha
3. Is praised as being equal to the tantric deities as well as a Yidam.
With the above qualities or praises, if Dorje Shugden is a spirit, I am sure he could not last until 300 + years as he would “be killed” by the three jewels.