Okay, apparently I cannot turn all of the caching off. (It says: We aggressively cache everything from pages to feeds to 301-redirects on sub-domains; this makes your site load lightning-fast for your non-logged-in readers. 99.9% of the time this is what you want, but every once in a while something happens where our cache should have been purged but wasn't. For example, some URL plugins change behavior without alerting WordPress.)
I can turn off object/transient caching. (It says: Generally you want this enabled for maximum speed and scale, but if your site is under active development or if you have a theme or plugin which is incompatible it might be more convenient to have it temporarily disabled.)
So I turned off the object/transient caching. I'll leave the script in the <head> tags. Fingers crossed this will work! It works now as long as I look at IE8 first after purging all caches. But I'm wondering if it'll stick whenever it is cached again. At a loss of what else to do. I'll just hope this works and keep checking on it. If it does revert back to not working, I'll contact my host to see if they have suggestions with this.
I really appreciate all of your help!! Thank you so much!