^ Anyone in my Clan will do so that I can edit the thread.

Or you could make a new thread since the last one is kinda dead and full of shit. You can ask and CMod or SMod to close the old thread and you can make a new one.

You're the leader. You can edit your OP through your clan page here.

You do not need to make a new thread for a "dead" unofficial clan.

I cannot edit my OP if the Thread Creator is not in my clan. Also Merry Christmas!

Sorry I am not trying to be offensive but that information is incorrect. FleshMon was the original OP but left so they transferred it to Viraly0. You can ask Tarlan.
-----
Also I really appreciate your help BTW :) And IF it comes to me making a new thread can we at least not close the old one?

Bump.

Go to this page
http://forum.toribash.com/clan.php?clanid=715
at the bottom right of the post there should be an edit button, I have perms to edit my OP in my clan and it looks like this
https://gyazo.com/72473e6414697f9818730ad1876018eb

Being a leader should give you all these permissions. That's why you should be able to edit it yourself.

Except I can't because the owner of the thread is no longer in the clan.

That doesn't matter. If you can't see the edit button theres an issue. But you should look for it in the clan page. Take a screenshot of what you see.