When we TR our characters take a part of there previous incarnations learning into the next life (PL feats). This makes sense.
When our characters have immersed themselves into Epic learning and acquired twist and useful abilities in them it only makes sense that this learning also carry over to the next life.
In this way the *unintended* feature that allows twist in heroic actually makes a lot of sense.
I urge you to legitimise this, and not remove it.