Teleporting an account from Bitcointalk to Altcoinstalks, and using a same password. It breaks an important principle, don't reuse password on different platforms.
If the hack happened for using the same password and teleporting the account then only the admin/moderators of that site may know the password. If the hack happened for teleport then the scammer is the admin/moderator. Though I do not know who is the admin/moderator and whether they have any intention to be a hacker or not I think they won't do this. I think the hack might have happened for another reason not for using the same password. One more important fact is that others happened same the hacker (which they said) those are not confirmed about the using of same password.