Whoever you were listening to is, at best, full of it! Perhaps wishful thinking by a Mitch Daniels fan? Still lots of them around.
The closes you will find to a SOTU response by a future president is 1968 when a team of Republican Congressmen giving the response included then-TX Congressman GHWB.
http://en.wikipedia.org/wiki/Republican_response_to_the_State_of_the_Union_address
http://en.wikipedia.org/wiki/Democratic_response_to_the_State_of_the_Union_address
LOL. I wish I could remember the names of the Presidents. It was one of the alphabet channels, though. I just took it as them trying to help set up someone from the establishment.