Exactly.
Assuming VLS not a factor, the FD commands are a function of the VS, not pitch attitude, (or FPA if that was the selection) in existence (which becomes the 'selected' and FMA displayed VS) when the bars returned.
This will remain so as long as there is no FCU selected change of the VS value, or vertical mode change thru pilot action, or the computations for the FD's again become unreliable.
As the airspeed decays at a given rate, the FD pitch bar will command a pitch rate commensurate with the pitch attitude required to maintain that VS (FPA) at successively lower airspeeds.
Eventually this becomes a losing proposition...
Last edited by OK465; 20th May 2012 at 15:13.