[Morsul the Dark]

Excellent point, maybe....Sauron Had his own Fellowship if you will like Captain said mybe there were many lietenents... One Orc one Easterling One harad..(wait are those the same as easterliongs? I forget.)

Gothmog could be the Easterling commander.

But then again it Sauron saw Aragorn he might have panicked and sent WitchKing's second in command.

More to the point though about the orcs fleeing Didn't they basicly fear their commanders if this were so they would take their first chance and run