Really? I thought he still had some sort of serious pull as far as the forum is concerned (though I'll admit I don't keep a close eye on forum politics). How long has it been since Cøbra hasn't been "associated" with bitcointalk?
Well, I'm not talking about influence, they can remain friends, it's their own business. Their paths finally parted ways a few years ago, theymos is not related to bitcoin.org and Cøbra is not related to bitcointalk.ogr. That's why I assumed theymos is the only owner of the twitter account (since it's a bitcointalk asset).
To answer The Pharmacist's question directly, theymos made the update to domain names on April this year, so safe to assume that was when they both cut connection from the other website after years of minimal involvement from both parties.
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However, Cøbra has never had much involvement in bitcointalk.org's operation, and I haven't involved myself in bitcoin.org for a couple of years, so the linkage between the two no longer really made made any sense. Therefore, we decided to separate the domains: I no longer have any access to the bitcoin.org domain name, and Cøbra no longer has any access to the bitcointalk.org domain name. The two sites should be viewed as totally separate, which in practice they have been for years.
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And then (getting slightly off-topic) on top of that, Cøbra also announced they were looking for someone else to take over the ownership of the bitcoin.org domain. It sounded like they wanted to bow out of the spotlight entirely. But after lots of drama and noise, I don't think anything concrete has been announced yet.