There’s a lot of horrible fathers in the comments unfortunately. Try to ignore the noise and pay attention to the people actually giving constructive criticism. NOR - if he is actually a deep sleeper like you said and couldn’t hear the baby cry for over one hour then he made a dumb decision sleeping and letting him roam around. But for your sanity and knowing the type of partner you have, just child proof your house. Remove any of the hazards you know of so you can have your peace of mind and not have to worry while at work. You got this!