I was at the game also, but didn't have any problems. It was my first time being away from the Ralph for a regular season game and expected some ragging from giants fans, but didn't really receive any. I was very surprised at the difference in atmosphere compared to The Ralph. When the Giants were on defense and the bills were on offense, the stadium was very quiet unless it came down to 3rd or 4th down. Giants fans also seemed to stay seated during those situations instead of standing.
It was a good experience and a great place to watch a game, but in the end I was very surprised by the lack of fan enthusiasm in the stadium.
As far as security bothering the guy who wrote the post, my guess is he's not telling the whole story. There was probably one to many beers involved, giving him and his buddies some extra courage to be loud and obnoxious. I'm sure there was some requests from the fans behind them to sit down so that their 8 year old kid could see the game, which was ignored. And at least 1 or 2 of those $10 beers that they bought were spilled onto the people in the row in front of them. Basically the same kind of things that happen from the 1 or 2% that ruin the game experiences for regular diehard bills fans at The Ralph.