Using the greater spirit totem rage power can the spirit get buffs from spells or abilities like when a bard sings or haste ???
I found this FAQ which is right on point. The answer is no.
"Barbarian, Lesser Spirit Totem: Who decides who the spirits attack, and what effects affect the spirits?
The barbarian decides who the spirits attack each round. The spirits are not affected by effects that aid their attacks or damage (such as bardic performance or bless) or penalize their attacks or damage (such as bane or darkness). The spirits always strike from your direction. They do not get flanking bonuses or help a combatant get one."