I haven't read this thread, so this may have already been posted: I attacked Mansa, who was a Vassal to Hannibal. Mansa got his butt kicked and cancelled his vassal status. A few turns later, he becomes Hannibals vassal again. There needs to be some sort of memory here, because it looks a little off. Become vassal of x. Gets butt kicked. Cancels vassal with x. Get butts kicked a little more. Becomes vassal of x again.