I've been listening the MT podcasts for 6 years now, and I understand the risk involved in giving your manager feedback, giving extreme scores on 360 degree feedback, etc.
I am also sure that jumping over the manager to the manager's boss to complain or going to HR is a likely "death sentence" (unless whatever the manager did was so bad, everyone would agree he or she should be fired.)
So, how does a manager receive candid feedback about their management style with their directs, especially if the manager's boss is based elsewhere and/or doesn't have a lot of time to view the manager's interactions with his/her directs? Moreover, how does the boss of the manager get feedback about the manager's management style?
I myself actively seek out feedback from my directs, but if they are following the MT method, I am guessing I would never hear the truth.