Turns out Jon’s problem wasn’t nearly that difficult..once I understood it.
Specifically, his challenge is with Slides.com and the Tableau share links. Once I played around wit both sites and did a quick search to verify my suspicions, it was a piece of cake.
Slides.com allows use of iframes to display content from other servers. While it does allow access to raw HTML, it does not allow inclusion of script tags, so you are left with using the iframe tool and source URL. When I applied a critical eye to the two share options, I noted:
I noted the parameter showVizHome was present in the embed code, but not the URL. A quick search finds this helpful page which allows Jon and anyone else t resolve the problem by adding &:showVizHome=no to the end of URL and problem is solved.