I opened the Superbin in my project this morning (Avid ver. 2.2.7) and instead of getting a list of the bins I could open, I got a series of horizonal buttons.  I'll refer to as "Button" view.

Unfortunately, this is not useful because the way I've labeled the bins (because the producer in this project refers to the media by the date it was used) I have a series of buttons with the same leading text. 

I've tried closing the Superbin and reopening the Superbin.  The "Button" view stayed.

I wound up closing the Avid program and relaunched it.  The "List" view returned.

Does anyone know how I could have made this change from "List" view to "Button" view, and if there is a way (short of closing the Avid) to get back to the "List" view (short of closing the Avid)?