In the present crop of sumo wrestlers competing in the May 2010 Sumo Grand Tournament, is there a former...?

Ozeki that is still active? Chiyotaikai has already retired and is now a former ozeki. But is there a former ozeki (that is, he was an ozeki but was demoted to a maegashira) but still competing in this honbasho? If there is any, what is his present rank now? Is there a possibility for him to be promoted again to ozeki? Thanks in advance.