Didn't bronco have Kaufusi and Anae on staff? Another poly former player "helping" with the RBs and several others as GAs (nua comes to mind)?
Or maybe, just maybe Bronco trusted the polys he had on staff as being good enough to keep pulling in the poly recruits and has finally realized that Anae and Kaufusi don't really have enough street cred amoung The young polys to get who they should have been getting.