Cannot click other site links near slide-in.

I'm having an issue with the Slide In plugin preventing other site links from being clicked while the slide in is activated. I'm having the Slide In appear from the right after the user scrolls down 60% of the page. However, when it appears, links that are directly across from it cannot be clicked until the Slide In is closed.

Is there a way to allow for the other links to be clicked while the Slide In is still active?

Thanks for your help!

An example page is here:
http://www.setonmagazine.com/author/contributing-writers/a-call-to-simplicity