I'm visiting Mantis108 this week.
Last month on another thread I talked about the alternate app for move #13 in 7* bung bu.
This application is not related to this form, but when I asked my teacher why it has this name he showed me an overturn the body technique.
The app shown in WHF book is also how we do it in our 2 man form.
Note:
After Robert parries the elbow strike I follow the motion of his push and stick my head and right arm under his right arm. My right hand grabs a hunk of flesh as shown in the pic.
For the move to work he must be pushed off balance by me before I can uproot him.
Fan Che Shr
On a related note, he has posted picks of taking me down on his TJPM forum.