A shape barre chords

This is a 2.63 minute video response from Steve Eulberg on Nov 1st, 2008

Question:

"Theedge asked "Hi, I'm having some trouble with the A shape barre chords. My 3rd finger just won't bend enough to let the first string ring. While experimenting alternate methods I discovered that my pinky bends almost to a right angle and used it successfully in place of my 3rd finger. But the problem I have now is that this position is slow to switch to. So my question is : did you, during your experience, see anybody fingering an A shape barre that way successfully ? If the answer is no, do you think that my 3rd finger will become more flexible with time and practice or is that a physical limitation that cannot be perfected ? Thanks a lot.""