Target target swap for sunders only changes your target. The issue you are having with it targeting healers etc. I can guarantee you has something to do with turtle wow, and my guess is it's also what it causes it to move etc. Because otherwise this issue would have come up earlier. 🙂
And comparing my FCs to other FCs is little tough love, since every FC is in most cases pretty unique, unless ofc. you use FC's made with the fightclass editor. 🙂