I'd like to take a brief timeout here to share how horrified I am of youtube videos of things like this. Oh, my snake is being mauled by a rat? Let's keep the film rolling and see how it goes. My hognose is EATING itself? This video will have so many hits!
*Cringe*
If your snake is in very obvious and preventable danger, put down the camera and stop it. I would not take a word of husbandry advice from a person who allowed harm to come to their animal and sat there filming through it.