It's feeding time, he's in his hide ready to go, he sensed movement and a heat source nearby...WHAP! Pretty much normal stuff for a hungry snake, Patricia. I get jabbed at regularily on feeding day around here but rarely tagged (I'm fast for an old broad LOL). Think of it this way - you have a snake that's so well settled in with you and doing so well that it's developed a solid and strong feeding response and that's a good thing.

Remember when it comes to behaviours with these snakes to look at the bigger picture rather than an isolated incident. Usually that will give you a better grasp of what's going on, what the triggers might be or whether this is in fact a change of behaviour or just a reaction to stimuli.