Yep, you need something to "boop" him with when it's time to handle him.
When one of my snakes shows signs of being aggressive I just barely touch it on the nose with a paper towel cardboard roll. They immediately go out of "hunt mode."
It also helps to make your first contact from the side and not from the snake's front. Pets or not they are still feral and programed to survive.
<><Peace