Actually, I don't think it's sloppy at all. Sometimes you just forget to realign it- especially when you're dealing with crossing restrictions, runway changes, and trying to get a hold of ops. What worries me is if butterfingers starts punching stuff on the FCP, and accidentally changes the mode when the AP is engaged. It's happened to me more than once. It's simple... when the AP is engaged, the PF changes stuff on the FCP. When the AP is disengaged the PF commands the PM as to what he wants done on the FCP. It's not rocket science.