After his sannyas initiation Siddhanathaswami began to let his hair grow. When it became long enough to tie into a kondu in the back it means it is time for his tonsure. Acharya Kumarnathaswami performs the deed.
In our teachings we're both monistic and theistic. In the beliefs of Saivism the idea of the three worlds is the basis and key to understanding temple worship, theism. The inner worlds are there to help you. The essence of the soul is already the same as the essence of God Siva, monism. You just have to find it.