To get rudder reversal you need to have an extremely high AOA. It was a phenomenon that the F4 Phantom could suffer on heavy take-offs. It is only likely to happen to an airliner in a deep stall, and is only happening because the wings are so heavily stalled that the yaw from the rudder and the subsequent change in airflow over each wing (in terms of effective AOA allowing for dihedral, and effective chord, span and sweep changes due to side slip) are insufficient to overpower the roll effect of the rudder, acting like a vertical aileron. It is not a useful consideration, and rudder should be applied opposite to roll when aileron authority is exceeded as the above scenario is so unlikely.
How this applies to the AA accident I can't fathom...