Gotta admit, that was fun to watch. Watching those aholes of Cerberus getting torn a new one never gets, but the added humiliation of this getting done by four asthmatic midgets in suit, well... it's just delicious 
Care to share your build? I'm suddenly in a mood to give volus protector a spin myself.
This is my built:
http://kalence.drupa...43N53364!DEGD.S
Its a no fitness build as both shields and health are negligible on higher difficulties.
You purely live on i-frames, health- and shieldgate. I like the Raider on him because of the high spike damage. Due to the recharge evolution of the orbs he can charge more often then any other kit and this is exactly what you need to do to stay alive. I also take the gambler evolution on charge as I think it fits the volus and allows him to charge even more often granting him the much needed i-frames and the damage boost.
Reapers is easiest for him as they have the lowest DPS of all factions but all factions are fair game once you get used to playing the protector. Each additonal volus will make your pack much stronger because you can get nearly constant shieldboost that way. Just beware of Collector swarms and Geth Stunlock...
Also the Volus Lovebubble between waves is very important 