I Put 1/2 a cup of corn sugar in my new 2.5 gallon corny keg a week ago in my heated (room temperature) basement and everything was destroyed when returned from the Christmas holidays, my tv, electronics, sofa, like a bomb exploded and it smelt like beer all over like someone sprayed beer all over the place. Then I saw the keg with the top blown completely off and a torn whole on the side, What happened? I never was told that this can happen?