There was plenty of talk that Coughlin had lost the Giants in years past. It wasn't until he relaxed his stance a bit (team leadership council) that the team responded, but, he had to first "set the tone." After players knew what the "Coughlin way" was that he pulled back a bit (and he may have been forced to). Listen to Strahan's HOF speech when he talks about him. There wasn't the love the former Bills players profess for Marv, but, there was respect.
Right now Marrone's on an interstate doing 80 in icy conditions. There's no telling which direction he'll end up going when it's all said and done.