Pixhawk Crash: lost control

Hi everyone,
i need your help !
i fly an octocopter S900 with Pixhawk. i was testing the auto landing gear process ( it was inverted, it retract the landing gear when landing in RTL) when i touch the ground with the gimbals and i" panic " and put full throttle. but by error i think i hit the switch for the parachute release mechanism.
then i couldn’t pilot the drone any more, no more responses.
the drone was taking altitude and i couldn’t do anything. i try to launch an auto mode with an old track with my computer (mavlink) but no answer. try to switch off parachute but no change.
suddenly hopefully he start to come down but not like a stone! and so it crash but ihad no control on it.
some part of the frame broke and some propellers but otherwise it seems good.
here is the result of the auto analyse:
No of lines 1397860
Duration 0:06:04
Vehicletype ArduCopter
Firmware Version V3.3.2
Firmware Hash 7f16e4d6
Hardware Type
Free Mem 0
Skipped Lines 0

Test: Autotune = NA -
Test: Balance/Twist = NA -
Test: Brownout = GOOD -
Test: Compass = GOOD - mag_field interference within limits (10.65%)

Test: Dupe Log Data = GOOD -
Test: Empty = GOOD -
Test: Event/Failsafe = FAIL - ERR found: CRASH
Test: GPS = GOOD -
Test: IMU Mismatch = UNKNOWN - No IMU log data
Test: Parameters = GOOD -
Test: PM = NA -
Test: Pitch/Roll = NA -
Test: Thrust = NA -
Test: VCC = WARN - VCC min/max diff 0.407v, should be <0.3v

i dont understand what happened…
please help