First, let me say how great the new magnified view is. Thanks, Zazzle.

My suggestion:
In many online stores, the magnified or "larger" view generally has an "x" at the top right and a "close view" at the bottom, centered or on the right. I suggest that you add a "close view" at the bottom of Z's magnified view.

The reason is that it is all too easy to accidentally close a browser tab instead of Zazzle's magnified view. I did this recently myself. I'd hate for customers to accidentally leave products that they were interested in and wind up not buying from Zazzle.