K.R.
Well I feel time out is ok at this age. I have been using it on my son. But you can not expect him to stay there for any length of time. But they do need to be aware they are not behaving nicely and there are consiquences. We have a couch he goes to. We put hi on it and walk away. He of course gets down, but as long as he is calm we are ok with it. If it continues we tell him he needs to calm down and take him back over and do it all again. The thing is you need to comunicate this with the dad so when he is in Nevada he can implament it as well and he does not get confused. Really he will not stay but for more than a few seconds but usually if not on the first try our son will calm down and know we mean business by the 2nd or 3rd time. Good luck, I know it is trying but you have to put your foot down and teach them now so it doesn't get even more out of control when he is older.
K.