I think the plan was to let them play a loose man back, and back our guy (Drummo) to be more damaging. Unfortunatley Drummo had a shocker and when it was apparent that it was not his day he ended up going to Green.
It was evident by half time Drummo was having a stinker, if not sooner and the switch should have been made at that stage. It was obvious to all at the ground, surely the TV picked up Green was killing us.