Kumar, in your argument, you want every unclean person to enter Lord Krishna's premises? I am merely stating the obvious. Lets get down to the core here.
I am not saying that people from other castes should not be visting the Temple. I am merely stating that the Tantri knows better because he follows the Vedic Scriptures.
There are three types of Karmas - Akarma, Vikarma and Karma. ViKarma is stricly forbidden in the Vedic Scriptures. Tantri is merely implementing that. What is wrong with that?