it's such a great big world for a smoll lil snek! i'm sending all the good vibes the lil one will turnup.
are there other snake enclosures in this room? if your hubby forgot to secure the lid to the Bredli, he may have forgotten to do the same to other ones. if so, the Bredli could have gotten into a different enclosure and is hanging out w/ another snake. i've heard this happen before. an owner would look for a lost snake everywhere around the house only to find 2 snakes together when it was time to clean or handle.
best of luck!