Update Messed Up My Page

Or is there a way to roll back the update?

You can download a fresh copy of the theme and replace the current one with it. Your issues with the theme seems to be because of editing the theme files directly. Always create a child theme for customizations.

You might want to post on the theme’s forum – the developer will see your post there:

http://wordpress.org/support/theme/easel

Continued here http://wordpress.org/support/topic/comic-easel-update-mess-up-my-site?replies=1