That is the direct quote being reported in the press. If you got a different source you better post it Santorum is drowning fast.
Would love to see the video. It would clear this issue up real fast.
http://washington.cbslocal.com/2012/03/22/santorum-might-as-well-have-obama-over-romney/
Learn to read. Nowhere in that article does it say Santorum said “I’m going to vote for Obama.”