Something odd: Opening that thread I see that the OP screen named is southernmaninla.

But backing out to SIG Forum Office I see that the last post in that thread is (currently) by HarrisonLLC.

The name displays correctly for me. Perhaps if you deleted your browser cache, you will see the change.

His new screen name is now displaying correctly for me too, even though I didn’t delete my browser cache. A delayed operation apparently.