Breec, you are expecting him to behave a certain way and hoping that he won't.
You need to let this go and let him make his choices and decisions. He sounds like a jerk to me and you are allowing yourself to be the victim.
IMHO, your daughter was wrong. It is a bathroom that she uses and she is old enough and responsible enough to clean up after herself, especially if others are going to use the bathroom.
I do not think your husband handled this quite right and it is so blatantly obvious he behaved that way to get to you.