Yes I do mean slowly turning, but I want to say that my gut feeling is that it shouldn't be done by pushing on the blade tips, rather as close as possible to the center of rotation (shaft). I can't find any written reference and my gut feelings have been wrong before, therefore this post.
On a totally different topic, it seems to me that the recent AD has been posted as a quick fix for a machine that is not at the top of Bell's priority list.
If the same problem would've developed on a newer series...well, probably a whole different story..