^ That I buy. Those points make a lot of sense. He pointed out the gain from clearing the flow to enhance the "beam wing"(lower element on the rear wing structure) function, which works in helping diffuser drawing flow out. And he pointed out that the pullrod with its location will compromise the diffuser itself, but probably the other gain made will negate that.

Edit, I posted later than Matra, I am referring to the post from Scrutineer which shed more light into the autosport issue.