Sounds like they got a BCI then (which is what I want). Also sounds like a male is a good bet as well. I haven't sexed a snake, but is it even possible to 'pop' a new born (or a month old)?

Why are tubs more preferable than tanks? Do they not like fast movements around them all the time? The only thing about tubs is you can't really see the snake while they are inside, but I guess thats why you take it out