I just now figured out why my experience in your house was so completely awful - you genuinely don't want visiting fans. It's not the playful banter and smack talk that happens in every ball park. It's not just the small percentage of drunk idiots that every fan base has. I think it's a good 50% of you folks genuinely feel violated and trespassed upon when someone comes in with an opposing jersey.
I only go to road games, and have been to about 3/4 of the stadiums in the league. Oakland is rough. Atlanta and New Orleans can be inhospitable. Never, in about 40 games, have I had an experience with so many idiots grabbing me, shoving me, pelting me with candy, screaming in my face, etc. It was continuous, unprovoked and not only from a few bad actors. (Note - unprovoked means that I don't talk smack, I don't disrespect, in fact, one of my game-day traditions is to buy a round of beers for the nearest group of loud mouths. Did that this game, and it helped a bit for a little while)
One of the reasons that I like going to road games, is to talk to the opposing fans during breaks and half-time. I like to hear about their love for their team and their team's history. Only in Oakland and Seattle have I been treated like a piece of crap unworthy to be spoken to. I also go to road games, because I like the atmosphere. i don't mind smack talk, joking, bravado and the rest. But this experience was way beyond that.
On the other side of the coin, I came across cool fans in your park. The difference between the idiot and the cool fans had nothing to do with the amount of beer consumed, rather the years of experience at football games. The cool guys were universally veterans who had been going to games for over a decade. All the 20-somethings brand new to the Seahawks bandwagon behaved like idiots who dropped bad acid.
I left the game thankful that I didn't react to the crap and get thrown out or arrested. Standing next to me was a late 40's woman with her two kids. She left shaking and tearful. My take on the situation is that the Seahawks organization has seen the goal accomplished - visiting fans have learned to say away from this nightmare of a stadium, leaving more seats to be filled by "The 12th Man"