Titans fire coach Mike Vrabel after back-to-back losing seasons.
Team owner considered trading but faced logistical challenges with contracts.
Decision made due to league rules and a need for swift action.
Amy Adams Strunk calls the decision "difficult" in her statement.
A year after a GM change, the Titans seek a fresh coaching approach.
Vrabel led Titans to four consecutive winning seasons since 2018.
Team finishes 6-11 this season, prompting the coaching change.