Yup, sometimes they just goof up for who knows why.
Reminds me of the time my ball python decided to poop while trying to swallow his rat. I kept wondering why he'd start to swallow, spit the head out, drop, then try to eat, drop, rinse and repeat. He never did this before. I opened his cage to see what was going on and my nose was hit with the fresh scent of a BIG poop. It was NOT there when I first offered him his rat. I discovered he was SITTING on top of his poop, dropping his rat and getting poop all over it. It was as gross as it sounds. After I cleaned up the poop and offered him a fresh rat he just ate off the tongs lol