My top 5 would be (in order of biggest contributor):
John Butler: First and formost, he took a proud franchise and buried it. Then split.
Ralph Wilson......for firing Wade Phillips. (he should have put on the damn headsets).
Tom Donahoe.....for having bad drafts. Mike Williams, Trading up to get Ryan Denney, I still like McGahee, but he drafted him when they had a productive Travis Henry and desperatly needed help on the OL. For letting Pat Williams go. For signing Bennie Anderson. He made a nice deal unloading Peerless Price for a 1st round pick, and we were all very excited to get Drew Blesoe at the time, but niether of these deals in hindsight have panned out. And I haven't forgotten that he pulled the team out of "Cap Management Hell" that John Butler put the team in.....but after 6 years and no playoff appearances....it wasn't enough.
Eric Moulds/Trey Teague: Why? The offense has NO veteran leadership. These two guys are the veterans on this roster. Teague has never showed leadership,...which is a MUST for the Center.... and Moulds has grumbled a bit, plus the whole benching fiasco.
Achillie: His heel took Spikes out for the season, and he is a difference maker. London Fletcher played like a man possessed down the stretch but Spikes is the leader of the defense.