I have never seen such lunacy. What swing/putting coach would ever endorse this?
..and it doesn't work for her.
EDIT* actually she is currently ranked 46th out of 149 ranked LPGA players which is higher than I thought. I've seen some spectacular misses though.
Does bending over that far force (or at least encourage) you to use your hands/wrists more? Seems like it would also cause you to exert more energy maintaining the proper balance, because if you rock just slightly forward while that far bent over, you have less of a base underneath to stabilize yourself.