Not a BP, but my garters had coco huts for hides. Some have holes in them, naturally, and the little ones use to slide through there for fun, poke their heads out to look around, etc. (garters are like little kids) Well, my florida blue female apparently hadn't been through in a while, and not realizing she had grown, got herself stuck. We had to cut her free, but in all the panic, she kept whirling around in circles, so the edge of the coco hut hole put a nasty gash in her. She healed up okay, but carried that scar until she passed away.
We never used coco huts with the holes in them again after that.
Quick thinking on the dremel! And if anyone else gets in a jam like that, it's a good thing you posted, they'll think of that first! I'm sure hubster and I would have thought "bolt cutters" and wasted time wondering how to do it without hurting the snake....