I intended no rudeness. It merely seems to me that saying that someone who failed to be stopped by the glass ceiling "sidestepped" something is like saying Chuck Yeager "sidestepped" the sound barrier. They didn't sidestep it, they played by the rules and broke it.
Anyway, let me attempt to convey my general point again: The way I see it there are exactly 2 basic ways advancing. Nepotism, and combinations of luck/hardwork/getting noticed.
I don't know anyone who suggests that there is a glass ceiling preventing women from taking advantage of nepotism. Rather, every explanation of the glass ceiling theory that I have had presented to me boils down to in some way: luck/hardwork/getting noticed doesn't work for women.
Sandberg worked hard, got noticed, and arguably got a little lucky. Bypassing the glass ceiling would be to utilize nepotism but she went clear through it.
Perhaps it does exist, but Sandberg shows it's certainly not impermeable.
edit: s/wall/ceiling/