Work em.  Screw in anchors, chain, use fire hose piece.   10-12 inches is alot of years growth.   Prune it too.  Cut the height down,   Can dig a hole and make concrete anchors with a few bags of concrete.  chunk of tire can be used too. 
IF you got a tractor, push it upright to pretension the tree.  
Get earth anchors, angle them just like the cable will lie.  I'd do 3-4ft high and 10ft away.  If the anchors look skimpy, use 2 about 2feet apart.