hmm... I think
Gandalf was quite humble himself, and he does not seem to pay a visit to
Saruman with any frequency. I think the "Head of the Order" title is more a honorific title. Just as "Head of
the White Council", by the way. Meaning, he has no
authority other than that given to him by his lore and power.
I also don't think there was any open enmity between
Galadriel and Saruman. Saruman was very "cagey" -- he may have appeared to be proud and wilful, but not ill-disposed towards Galadriel. After all he was trusted implicitly by Gandalf (who was always full of suspicions)! All of the "suspicions" toawrds Saruman only appeared on hindsight -- before Gandalf's imprisonment he was "a good citizen", if perhaps too proud.
Finally, I don't think the
orcs were there by the time of the last meeting of the Council, which, if I recall correctly, was
the one that decided to attack
Dol Guldur. We should check the Tale of Years for that, but I think Saruman only began to actively breed orcs after this.