Bo ran up a wall quite easily. Granted it's not backwards but he's a big, heavy man and lighter children can actually support their body weight in these kind of gravity defying positions for much longer than adults.
Context means a lot. Bo gets a cheer because he had a ball in his hand and was on a playing field. If he did that in a hospital I'm sure people would be shocked.
ETA: Last time I linked this possession subject in another thread I had nothing but trouble with my links after. So I am hoping this one will work this time.
http://youtu.be/Lk3l_L-VJ3w