It's OK... stuff happens !!!when you've kept hundreds of snakes over 25 years...you see all kinds of weird stuff, and you get used to the odd loss.
I once had a snake completely swallow its mate during a breeding attempt.
I found it with just a tail sticking out...
I picked the snake up, it immediately regurged, and it's barfed up mate, is still alive and kicking today. so that had a good ending
On the other hand, here's another weird one
This snake didn't make it either