The short answer is just pick him up. Don't reward the behavior by leaving him alone. Grab him from the back, BPs can only strike forward. If you do get tagged, don't freak out. Keep him out for another few minutes and then put him back. A BP bite is not bad. It's like getting attacked by an angry piece of velcro. The primal "I just got bitten by a snake" reaction will be there if you are not used to it though. Just squash it and move along.
Dave