Tell your hubby you are making the decision, as he isnt there, and you need to do the safest thing for the family.
The damage is severe and you actually have responsibility to tell the landlord of any major damages to the house. This is one of them! lol

I know you dont need the stress, but it will be a lot more stressful if you put your foot through the floor boards iykwim.

Call hubby, tell him enough is enough, call the landlord and let him know what is going on.

Good luck!