The visage of a snake being grotesquely swollen with prey isn't necessarily accurate the majority of the time, at least as far as we're concerned as keepers. Especially when it comes to young snakes that we have to carefully gauge prey size with so they can safely swallow and digest. And even if there is a visible lump it doesn't take terribly long to get broken down. Those stomach acids have to dissolve an entire body after all.
And to add to Boger's point about how vulnerable snakes feel during feeding, put this into perspective. What are a snake's two best ways of defense? Fleeing and/or biting. The act of eating severely hinders both options so it's an extremely compromising position for any snake to be in. When you jumped after his strike (which is understandable considering how slow BPs tend to move at any other time) that spooked him and made him feel very unsafe. In his mind, there's a big scary predator about, it's too risky to try and eat.
But as also pointed out, it will get better with time. He will learn that you aren't a big scary predator and will grow comfortable with your presence. You both simply had a little road bump is all.![]()