Considering how much the Cardinals have regressed this season, it was inevitable that speculation would pop up regarding the status of Ken Whisenhunt, who is receiving a fair amount of heat lately in the desert. But team insiders tell us the Cardinals’ head coach, who had his contract extended through 2013 in February, is in no danger of losing his job. “No question. He’s the guy moving forward,” one team insider told PFW. “They still believe in him.” At the same time, we’re told it’s pretty much a given that some significant changes in Whisenhunt’s coaching staff and overall approach will be made once the season ends. At the top of the list is the likely ouster of defensive coordinator Billy Davis, who has been the biggest target of angry Cardinals critics the past month or so. “Considering how poorly the defense has played — and how little fire it’s shown — it’s hard to imagine Davis surviving,” the insider said.