Oh goodness - well at least it's ruled something out. The rest needs to be very strict, only out on the lead for toiletting etc - I know it's really hard. I don't think Murphy is crate trained?
You could try using a pen but sometimes they will jump up at the sides which obviously you do not want.
Otherwise if he is in a room where he can't jump then that is ok, if he can get to furniture or steps you need to keep him on a lead attached to you so that he can't jump.
I really hope it's nothing serious for you.