The existing action is to maintain current settings. A flight in Australia flew across the continent that way, after (theory says) somehow depressurizing during takeoff so everyone passed out.
IMO that story shows that unless you do the remote control option (which I see as unlikely) it doesn't matter what happens...what can anyone outside the plane do except crash it earlier?
https://en.wikipedia.org/wiki/2000_Australia_Beechcraft_King...
IMO that story shows that unless you do the remote control option (which I see as unlikely) it doesn't matter what happens...what can anyone outside the plane do except crash it earlier?