What Explains the Spiral Entry?

**   Report created 3/17/2003   Record 23   **
IDENTIFICATION
  Regis#: 7635J        Make/Model: P28R      Description: PA-28R-1802/3, Turbo Arrow 3/2
  Date: 03/16/2003     Time: 2215
  Event Type: Accident   Highest Injury: None     Mid Air: N    Missing: N
  Damage: Destroyed
LOCATION
  City: ENTERPRISE   State: AL   Country: US
DESCRIPTION
  AIRCRAFT ENTERED A 180 DEGREE STEEP SPIRAL, RPM WENT HIGH, THEN OIL PRESSURE DROPPED TO ZERO, ENGINE FAILED. LANDED IN A FIELD 3 MILES SW ENTERPRISE, AL.
INJURY DATA      Total Fatal:   0
                 # Crew:  1     Fat:   0     Ser:   0     Min:   0     Unk:   
                 # Pass:   0     Fat:   0     Ser:   0     Min:   0     Unk:   
                 # Grnd:         Fat:   0     Ser:   0     Min:   0     Unk:   
WEATHER: DHN 162253Z 12006KT 10SM FEW085 19/15 A2984
OTHER DATA
  Activity: Pleasure      Phase: Landing      Operation: General Aviation
  Departed: (EDN) ENTERPRISE, AL        Dep Date: 03/16/2003   Dep. Time:
  Destination: (EDN) ENTERPRISE, AL     Flt Plan: NONE         Wx Briefing: Y
  Last Radio Cont:
  Last Clearance:
  FAA FSDO: BIRMINGHAM, AL  (SO09)                Entry date: 03/17/2003