I think Cyrus can change names too so maybe message him.
The rules say that OP should only write to theymos by PM. Nothing was said about any Cyrus.
Watch
That's because at the time there was only one admin: Theymos. Now Cyrus is also an admin.
Just keep bumping the thread in the hope that it happens.
In order for a nickname to change, there must be a valid reason. Changing mind about pokers is not a valid reason.
And who said it's not a valid reason? That's not up to you. I'd say his is a fairly good reason but it's not up to me or you to decide but the admins.