I would curious to see your data on how frequently that kind of thing happens (I'm being serious, not smarty pants). I get what you are saying and it makes sense, but i would like to know how often things like that happen.
There is obviously trade-offs to any design, but it seems very counter intuitive to have controls that can work independently of each other, even if you can take control, there is still room for confusion.
Like I said, contributed.
I think a much bigger problem is most airline pilots lack of currency in actually flying the plane instead of just managing computer systems 95% of the time.
(Wait, were you saying that the control issue happening at all is speculation?)