I can’t imagine the Andersen not turning at any time. If it couldn’t turn, it would be extremely difficult, if not impossible, to make a turn while hitched.
You certainly don’t want to grease it as that is where the anti sway takes place. It definitely can’t be turned by hand. In fact, you don’t grease anything. I don’t miss the mess at all.
The only problem I have had with it is the brake material started to rise out of the cone. Maybe an eighth of an inch or so. I contacted them and got a new sleeve in the mail a couple days later. It took only a couple minutes to change out.
There are no springs on an Andersen. There are 2 large urethane bushings that the chains go through via a steel rod.
After 6 years or so, I am perfectly happy with it.