"Good. When that happens and it's good and dead, we can explain everything to Charlie, and unless he has a better way for him to plausibly meet his end - or, conceivably, can think of a way around needing to - you turn into him and Ethan mauls you and we generally stage the scene like a bear killed and dragged off our father, we go look for park rangers - whichever of you is not being a bear at any given time would be helpful if they were being pigeons and checking for park rangers who might get near Charlie. We tell the park rangers a bear killed and dragged off our father. Meanwhile Charlie gets morph-capable and turns into - something, it'll depend on what's available, probably some kind of bug."