You should understand it right. What does it mean when they say it's "just a procedure"? There has to be a purpose for the procedure. If you are purifying after a childs vomit or incontinence, it is basically to cleanse it for Hygiene. Which makes lot of sense.
What is the purpose to do "purification" after a "non-hindu" visits the temple? Other then it being a sinister act whose purpose is to hurt/Insult someone not your own ilk.
The Tantri goes on to say Father's Religion does not matter, here in this case it was Ravi Krishna's mother (a christian) being his problem. So what would be his reaction if a some "Khan" visits the temple, but whose mother is a hindu? He being born to a hindu mother.
Any sensible, reasonable human cannot but be appalled by this decision of the tantri. The politician is immaterial, it only helped bring out the bigotry practices indulged by these high priests to the open.