I would think this would induce a roll to the left, requiring right aileron and probably right rudder and therefore right rudder trim.
Maybe. I've flown an aeroplane that was significantly out of rig, and my recollection is that it required opposite rudder to keep it straight.
But the real question is a) how can the ATSB publish 2 reports with such a large discrepancy and laugh it off and b) why not investigate it in the SIM.