It might help researchers to clarify this idea better: "Visual imagery - While remembering the event, I can see it in my mind."
I can, for example, see my wife quite clearly at our wedding rehearsal 23 years ago. However, this is because I am recalling the several photographs that I've seen of that day. I do not have many personal episodic memories or reliving memories of that day (a few maybe).
I could not recall the fellas who were my groomsmen, for example. I never really studied those photographs, and I was surprised when my wife told me who they were.
That's definitely interesting, I wonder how photographs in general play a role with our lack of episodic memory. I've seen a couple people talk about how having journals have helped them, and that many of us take pictures often to help remember, I guess this might help trigger something in our memory that isn't blocked by SDAM.