Do OAuth tokens sustain hacking attacks?

‘Tis the season to be hacked, I guess. Twitter joined a bunch of other companies in revealing that it was the target of a sophisticated attack that may have exposed the information for about 250,000 users. While the data that was allegedly exposed, including encrypted/salted versions of passwords, was not as bad as in some other attacks recently, Twitter did take some proactive measures in resetting passwords (and letting the users know that they need to set a new one) and revoking session tokens.