No, you can execute sp_updates only if you are the actual owner of the database
Its a bug
http://microsoft.public.sqlserver.programming.narkive.com/VMUuTq0i/bug-in-sp-updatestats
you can try a workaround in the below link
http://connect.microsoft.com/SQL/feedback/ViewFeedback.aspx?FeedbackID=436562
--Prashanth