Walk Away From Meaning

(idiomatic) To escape (a mishap, accident, etc.) with minimal or no injury.

Example:   He decided to walk away from his job after expressing much dissatisfaction with his boss.
1965, "Auto Racing: Mr. & Mrs. Speedlove," Time, 12 Nov.:
  This fall's visitors have included a motorcyclist who flipped his bike at 150 m.p.h. and walked away from the wreck muttering: "I thought I had stopped."