It said that Satoshi lost the first forum which he was using a to post about bitcoin development. A SourceForge forum. That Sirius (could it be this Cyrus) provided hosting for the present day Bitcointalk we know.
Cyrus and
sirius are different person.
If Sirius decides to take his domain as the owner, can he or he can no longer temper with it, just as Satoshi can no longer temper with bitcoin?
Theymos is the person who have full control for bitcointalk domain and its hosting account, cobra confirms it a while ago.