iTunes podcasts: return to 2-columns?

[Huginnmuninn]

After upgrading to iTunes 11 a few weeks ago I somehow figured out how to get the original 2-column view with disclosure triangles for Podcasts (I don't use the Podcasts app), but this morning it had reverted to the 3-column view which I don't like.

iTunes U still has the 2-column view though.

How do I change Podcasts back to 2-column view?

 

[Huginnmuninn]

Fixed it

OK I finally figured it out: there is a LIST button towards the top of the window I needed to click.