Idjit, here's an article on HC taking coordinator positions. Actually has a quote from Wade Phillips about "bills to pay" and "its in your blood" after losing a HC position. The only thing lacking is the definition of "good."
In 2006......
"In addition, the group of former head coaches who accepted assistant coach positions over the last six weeks represents a boon to their new teams. As terrific a job as Nick Saban did in Miami in his first season in 2005, his staff is strengthened remarkably by the additions of Capers (fired by the Texans) to run the defense and Mike Mularkey (resigned as Bills coach) to preside over the offense. Norv Turner, jettisoned by the
Oakland Raiders, will attempt to rectify the offensive problems across the bay as the new coordinator for the 49ers. Former Vikings coach Mike Tice, as the new assistant head coach in Jacksonville, will get back to his roots coaching offensive linemen. Is there any doubt onetime Rams coach Mike Martz can help the offensively challenged
Detroit Lions?
In all cases, that will mean putting ego aside a bit, but all seem prepared to do so.
Mike Sherman, the former Green Bay sideline boss who earlier this week accepted the position of assistant head coach on Gary Kubiak's initial
Houston Texans staff, is the most recent of the ex-head coaches to take a job of lesser title. And he conceded that letting go of the concept of being a head coach was a difficult thing to do."
https://www.espn.com/nfl/columns/story?columnist=pasquarelli_len&id=2333761