Originally Posted by jenb
This. There's a big difference between throwing a proper flex shot by arching your back and throwing on plane, versus wrist roll.
I agree. I throw intentional flex shots with pretty good success, depending on the situation. There are many holes in the world that set up for this, and many times when a great approach or get-out-of-jail shot requires it. It doesn't mean that a perfect throw CAN'T be executed WITHOUT a flex shot, but as was stated earlier, it's a nice shot to have.
Of course, if this is the ONLY way these folks are throwing because they don't know any better and THINK it's only way... then, Houston, we have a problem, and I agree with the other responders citing poor form.