I have a similar problem with my site, and came up with a workaround.
My workaround will only work if you never intend to use tpg get posts and YARPP on the same page.
On my site, I use tpg on my pages and only my pages, and yarpp only on the end of posts, so it works out just fine.
Edit /tpg-get-posts/inc/class-tpg-gp-process.php Line 302
Change
$content = '<div id="tpg-get-posts" >';
to
$content = ' <STYLE type="text/css">.yarpp-related {display:none}</STYLE><div id="tpg-get-posts" >';
That’s it. Now when you call tpg get posts, it will inject the css to hide any yarpp addons.