That's incorrect. The new members will be chosen by D'Angelo and the two new independent board members. Both of which D'Angelo had a big hand in choosing.
I'm not saying Larry Summers etc going to be in D'Angelo's pocket. But the whole reason he agreed to those picks is because he knows they won't be in Sam's pocket, either. More likely they will act independently and choose future members that they sincerely believe will be the best picks for the nonprofit.