Agree about the circumstances but the cards did fire there coach to get the actor looking coach they have now after one season.
Here's a list of one and done HC since 2000
Chip Kelly, 49er, 2-14, 2016
Jim Tomolusa, 49er, 5-11. 2015
Mike Mularky, Jaguars, 2-14, 2012
Hue Jackson, Raiders, 8-8, 2011
Jim Mora, Seahawks, 4-12, 2009
Cam Cameron, Dolphins, 1-15, 2007
Art Shell, Raiders, 2-14, 2006
Marty Schottenheimer, Commanders, 8- 8, 2001
Al Groh, Jets, 9-7, 2000
Steve Wilks, Cardinals, 3-13, 2018
One notable firing was George Allen. He's the only coached hired who never coached a regular season game. The Rams hired him for a third time. Allen brought with him his scrupulous discipline and attention to detail, which extended to practice-field protocol and dining-hall decorum. However, his autocratic coaching style did not play well with the new generation of NFL players, and a group of Ram players chafed at the regulations almost immediately. Some made their grievances public; a few, including standout linebacker
Isiah Robertson, briefly left camp. As newspaper reports were quoting players expressing confidence that differences would be resolved, the Rams played listlessly and lost the first two games of the
1978 exhibition schedule. Rosenbloom decided that an immediate change was needed to save the season, and announced Allen's firing on August 13.