I have a curly willow in my yard that seems to have, in the last few days, heaved itself up about 6 inches from the ground and is leaning to one side. A very large root is showing as well. (about 10 inches in diameter) The root seems solid in the ground still. Im wondering what may have caused this to happen & also if there is something I can do to remedy the situation. The tree looks to be heavy on the leaning side. Would cuting some branches off on the heavy side help at all now or should I leave it till early spring to do that? Its such a disapointment since this tree is 12 yrs old & is just beautiful. Any help would be much appreciated. Thanks.