Upfront will not load after adding map image

After trying to add a google map element to htp://wgaz.oncenetwork.com Upfront will not load. I have disabled all plugins and also add the following with no luck.

<IfModule mod_security.c>
SecFilterRemove 00318

As a result, I am held hostage and now losing valuable time.

Support access has been granted

I think there needs to be a better way to have Upfront go into a safe mode so that we as end-users can undo whatever has caused the hiccup. Maybe a list of recent changes as a menu option that can be toggled to rem out the added code/element. Or a revision section with an auto save like you see in the Wordpress posts.