Over the course of the FIRST competition, refferees have had different viewpoints on this issue. Some call a robot that is touching that corner bracket (that attatches the vertical bar to the horizontal bar) as NOT HANGING. Other refs say that if a robot is brushing up against it, thats fine. However (and here's where things get tricky), the intent of the rule is that... in the instance the vertical bar & bracket were removed, would the robot still be hanging?? That's where your robot comes in.
If you think about the force vectors involved, if your robot is hanging outside the vertical post and you have a loop around the corner-bracket... part of that loop is exerting force horizontally on that bracket. If the bracket were removed (depending on the angle), you're robot may fall.
I was the Head-Ref at PARC... as I recall this situation didn't come up. But if it did, I would be getting the graphing calculator out
ByE
erin