One thing I noticed that no one has brought up yet....all this introducing of different snakes happened in ONE night? If he flipped out at the first snake...for whatever reason...I would have given him a few days to calm down before trying to do anything else with him. He's already stressed after the first encounter, whatever may have caused it...so constantly shoving new snakes into his face is NOT going to calm him down.

They're primitive wild animals. There's never an guarantees, and certainly not sex-on-demand...no matter how well he might have done with another breeder in the past.

Were I in your shoes, I'd simply give him a few days to calm down...THEN try introducing him into the female's tub, rather than the other way around. And then give him a chance to settle down in there as well.