Since the parking pawl is in the rear of the tranny it seems likely to me that the uncoupling came after the tranny; like maybe the driveshaft coupling.
If it was uncoupled internally it wouldn't drive the parking pawl drum and if it was still connected to the wheels it wouldn't be moving unless the car was.
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician