Hi Mark,
The Wistia embed code you provided is not actually the embed code; it’s a link 
Just tried it with the real Wistia embed code (Lenny sample below) in a BB Text module; works fine as shown in the screenshot.
The key is to use the correct Wistia embed code then use the HTML tab in the BB Text module to paste it in; that’s what I did and it works just fine. “Text Above” and “Below” too
<div class="wistia_responsive_padding" style="padding: 56.25% 0 0 0; position: relative;">
<div class="wistia_responsive_wrapper" style="height: 100%; left: 0; position: absolute; top: 0; width: 100%;"><iframe class="wistia_embed" src="//fast.wistia.net/embed/iframe/apmwndqiq8?videoFoam=true" name="wistia_embed" width="100%" height="100%" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen"></iframe></div>
</div>
<script src="//fast.wistia.net/assets/external/E-v1.js" async=""></script>
