Sorry to hear about the crash. It really does dampen the confidence in the machine when it happens.
You are not alone, i had the exact same thing happen to me. My story is at the top of page 1015. My MC and IMU have now been replaced with brand new units only to find i get the dreaded white lights
My gimbal is completely seperate so it definitley did not contribute to my crash.
I would recommend contacting your DJI rep.
Best of luck!