I'm glad the Seahawks are finally doing something, two incidents from previous years come to mind:
Seahawks fans throwing snowballs at the Jets players as they left the field - which was totally ignored by the team and NFL (try throwing anything at players in NY or NE ... You get a lifetime ban!)
And Seahawk fans making huge signs to insult opposing team players as they leave the field, like when the 0-13 Lions played there. I can't find the pic at the moment though, but I'm sure it's on NFL.com
It's all unnecessary bull**** that should have been addressed way before it got to the point it is at now.