As much as i know that 2h enha is not coming back, all the Monk/Druid 2-handed agility staffs/polearms can be made to be usable by Enha shamans for some sweet 2h action xD.
Yeah Shamans can't use polearms. What he had was the agility staff that Immerseus drops. What he is doing with it is anyone guess though. Maybe he was role playing or something.