It seems that on other, more "mainstream" sites, there's are strong threads here and there of "Santana deserved it." As mean as she was being, I don't think she deserved it. At the end of the show, she confronted Finn and he said the whole school knew anyway. He still had no right to say "Why don't you just come out of the closet?" in a hallway with other students around.
I really hope they follow up with this in upcoming episodes. I'd like to see Kurt (or Kurt and Blaine, or Burt, or Will) confronting Finn about why outing someone is wrong. They all seemed to understand.