The rudder hard-over in the 737 was NOT a slight problem but the odd thing was how random it seemed to happen.
The big thing was unloading the airplane and trying to get enough speed so you were above crossover.. where you had enough aileron authority to exceed the roll being created by the rudder hardover. Pulling back increased G, increased crossover speed and decreased your chances of recovery.
It tended to be a very exciting training maneuver even in the simulator. One left with the distinct impression that while you would be able to handle it in cruise, it was not going to be a fun day and you really didn't want to have to deal with it at low pattern altitude.