With the culmination, both Kimble and Norma Bartlett realize that Alan Bartlett plans to murder Norma and Kimble throws the circuit breaker to cut the power in the house. Then, as Kimble and Alan battle in the dark, Kimble tells Norma to get into the elevator and she takes it to the second floor. But if the power in the house had been cut, the elevator could not have taken her up to the second floor.
When Kimble helps Mrs. Bartlett out of the car she seems to easily transfer herself to the wheelchair. She also moves her legs a lot as he wheels her into the house. This would not be the case for someone paralyzed from a spinal injury.