Pretty sure he was joking since Romney is usually careful not to say he is a Mormon or LDS, unless he is trying to get voters in Utah. I believe through most of Romney’s campaigns he always gave his religion as Christian, not LDS or Mormon.
The odd thing is several of my LDS/Mormon friends have said that Romney is not a “real” Mormon, not sure what they mean by that. I don’t discuss religion with them, so I don’t ask what they mean.
A mormon freeper says Romney is Gadantian sp? Gonna look it up one if these days...
An LDS member recently said the same thing to me; that Romney is not one of them.