-----------
Few Cloudy ex-Tanker
........... Maybe I figured that by taking control and having a debrief, I had sorted the problem. .............
-------------------
All the evidence seems to suggest that the rudder problem with the FO had been sorted out. In subsequent flights with the witness, rudder use was much more restrained. No other pilots seem to have commented on any excessive use of the rudder by the FO. Only very slight rudder movement is visible in the 1st wake encounter in the AA587 FDR reconstruction video, so the rudder was used then with great restraint (or not at all) in the 1st wake encounter.
Incidently the NTSB have not made the FDR data available on-line, but it can be viewed
here.