i am worried that you got the cart before the horse a bit here.......you really can't just move a spouse's stuff to their car and then move the car off the property and call it good. think of that in reverse for a moment....he could to that to you as well.
you need legal counsel and to follow the appropriate steps in order for this not to blow up on you. i GET your motivation, i really do, but perhaps your plan needs a bit more work first.