Yes Shadow and I Zero downed him this morning couldn't screenshot it as im on my DROID.
The way to beat him is to have a commando grab aggro (make sure You have some hp stims) keep miner kited and others kill the egg spawns as they explode and damage you and miner. Stay calm keep tank up and soon he will drop. Also we screen shakes get to wall to miss falling rocks.
Other note devs his drops we're horrible.