It's no fun when a snake gets out. What if it would have gone while you were asleep, and gotten into a place where it was either stuck, or in real danger? I had one escapee back in 2003 with I started getting into BPs. Her cage sliding door was left open and she got out. She was found by my husband and I, frozen and lifeless in the basement (it was wintertime; dirtfloor basement.) Se had crawled into the heating vent and her weight broke the tape that had been holding the dustwork in the basement. Hewl, she could have ended up in the furnace itself feasably..
Please don't take snake escape lightly. Consider yourself damn lucky that your snake is not dead.