Log analysis help

Hello all,
I recently had a crash after an battery FS_BATT_FAILSAFE. My current settings were:
FS_BATT_ENABLE = 1
FS_BATT_VOLTAGE = 14
FS_BATT_MAH = 0

I realize the FS_BATT_VOLTAGE was probably a bit too high, and should have probably been set to 13.6 (4s battery), so this seems to be the cause of the FS. The problem is, after it went into FS and attempted to land, the motors continued to spin and would not power down which eventually caused the copter to flip.

Does anyone have any thoughts on why the motors would continue to spin?
Thanks in advance for any suggestions/guidance. Log is attached.
104.BIN (121.8 KB)

Warren

Logging set to low to get good answer. Looks like GPS drift that caused the copter to think it was moving when it was landed.

Mike