Concur with zzuf. Turn all the JBs off and fly it like a C150 - worked for me.
I know naught about this event's detail. However, for what little it may be worth, years ago I was working on an aircraft support project. Two LAMEs were my operator-support-go-on-lots-of-world-trips guys. Both were active FS junkies (as well as being top troops). As far as I knew, neither had ever touched a pole.
I took them along one night on a 734 sim session and, while the studs were having a break, gave them each a run (motion off). Each managed a takeoff, circuit and landing to a respectable standard, considering. Not decorative and pretty but certainly workable. Raw data, manual throttle.
For what it may be worth.