Lucas: I think we should have Jar-Jar in the live action TV show... But let's run it by the office Lucas/McCallum naysayer.
L/M Naysayer: No I don't like it, he has no weapons, you can't possibly...
Lucas: Perfect, continue with the operation, you may insert Jar-Jar when ready.
Seriously Jim Ward for one has always been about getting the O-OT on DVD. As I understand it, it's mostly because of his lobbying that Lucas finally relented for the September release. And I think McCallum, while supportive of Lucas' revised vision would also just like to see all the fans happy.