From the question What are these four “waffle-like” structures on top of the Long March 2F just launched? and @RussellBorogove's answer there we can see that the Long March 2F carrying the Shenzhou-11 crew had grid fins.
above left: Screen captures from the YouTube video Launch of Manned China Mission with Shenzhou 11 to Tiangong-2. right: from this answer and larger size.
In the question What are the Grid fins on the Soyuz escape system used for? as well as in the site http://loveopium.ru/news/soyuz-tma-09m.html (linked a comment by @PavelBernshtam) which includes a NASA photo by Bill Engles of a Soyuz scheduled to launch 26-Mar-2013. More grid fins!
Question: Why didn't the manned Saturn V's have grid fins as well? How did they manage without them; what replaced their apparently necessary functionality?