As far as I'm aware, I've never seen a DRG pick up a Golem ... in DF you'd have 2 tanks, each tank takes one and then the WHM would pick up the other one ... so... if they were gonna change it, then they should have let you know ... Otherwise, MT, WHM, BRD pick up them up, as far as I'm aware anyway for the 1 tank strat. You didn't do anything wrong, so don't worry about it.