A simple 2.35 "crop" wouldn't look right, as for some shots, important areas would be clipped, and other shots would just look odd. It's quite uncommon for the important picture information to be directly in the middle on the IMAX scenes.
With that being said, itv did air TDK the other day in 2.35:1 throughout, which I recorded in HD. I'm in the process of merging this recording with the BR. I've actually noticed 1 use of an alternate take (possibly shot from a different angle) in place of an imax shot, Alfred burning the letter towards the end of the film. Not sure of any other cases of this as the frame counts don't differ, which makes them hard to find.