I understand that there's a difference between 24fps and 30fps. But this is not the same kind of "jerkyness", do you think that it needs a pulldown to uprez it to 60i?
Sounds like it may be that you were zoomed in, had the OIS on and were panning, am I correct? I had some weird jerkiness and I think it's because I was panning at the long end of the lens with the OIS on. Try turning the OIS off and see if that works.