I think that's definitely his mock logo, not the original. The original logo is anti-aliased and thin, not in that blocky 8-bit style. You can also see the squared-off "NeoFossil" logo above, not the rounded New Relic logo. I think he probably cut it out of a different mock splash page he made that had a line starting with "changing..."
additionally it was more than enough for someone to mistake that account as the conference account at a glance
http://futurestack.com/blog/wp-content/uploads/2014/07/Scree... from this you can see at the time he was using the FutureStack image itself (the line just below the logo is from the original, not his edit), so presumably at the time he got suspended, he was using the original FS logo