I went to the 2008 game with similar experiences. While walking through the "quad" a UGA fan got up in my face (app. 3 inches from my nose) and started barking at me. I could smell the cigarettes and liquor on his breath. While in the stadium, my wife and I had Coke bottle caps and peanuts throwed at us the entire game. A middle age UGA fan that was sitting in front of us would stand up, slowly turn facing us and give us an evil stare every time we cheered, especially when EB grab that interception. While leaving we also witness a fight in one of the concourses in the stadium.
I have been to multiple games at Neyland (UGA 09, Cinci 11, USCe 95, Vandy 01 & 04, and the SECC 01 vs LSU at the Georgia Dome) and never seen anything like that.