Yes, Bollinger must go.
I think Summers is heads and heels better than Bollinger.
Summers may have "apologized," but he took tremendous heat for three separate courageous moves -- the remarks on women in science, Israeli Divestment which he squelched, and Cornell West's lack of scholarship and subsequent departure for more congenial Princeton.
Harvard does not have the propaganda MEALAC infiltration Columbia has. Bollinger has allowed the Saudis and UAE to buy a department. Anyone who expects that situation to improve isn't watching the trail of cash.
Unfortunately, much of the poison preceded Bollinger. It occured under George Rupp. In fact the school started to rot back when they provided refuge for the Frankfurt School in the 1940s.