See I think these photos confirm the throwing the racq at the ball, loose-handed, manouver made possible by a smaller grip, the photos don't lie about that at all - surely this cannot be open to debate?
I don't think it's all just wrist flick btw, I think it's also a greater movement in the palm.
Whether they also mean hitting the ball at the trailing edge is a ditferent matter - but the more closed the racq at impact surely the more likelihood of hitting at trailing edge...?
(All up, inspired by this thread, and some other experimentation with secondhand racqs, I'm going from 4 1/2 to 4 3/8 with new racq.)